Bump mypy from 1.17.1 to 1.18.1

[dependabot]

Bumps mypy from 1.17.1 to 1.18.1.

Changelog

Sourced from mypy's changelog.

Mypy Release Notes

Next Release

Mypy 1.18

We’ve just uploaded mypy 1.18 to the Python Package Index (PyPI). Mypy is a static type checker for Python. This release includes new features, performance improvements and bug fixes. You can install it as follows:

python3 -m pip install -U mypy

You can read the full documentation for this release on Read the Docs.

Mypy Performance Improvements

Mypy 1.18 includes numerous performance improvements, resulting in about 40% speedup compared to 1.17 when type checking mypy itself. In extreme cases, the improvement can be 10x or higher. The list below is an overview of the various mypy optimizations. Many mypyc improvements (discussed in a separate section below) also improve performance.

Type caching optimizations have a small risk of causing regressions. When reporting issues with unexpected inferred types, please also check if --disable-expression-cache will work around the issue, as it turns off some of these optimizations.

• Improve self check performance by 1.8% (Jukka Lehtosalo, PR 19768, 19769, 19770)
• Optimize fixed-format deserialization (Ivan Levkivskyi, PR 19765)
• Use macros to optimize fixed-format deserialization (Ivan Levkivskyi, PR 19757)
• Two additional micro‑optimizations (Ivan Levkivskyi, PR 19627)
• Another set of micro‑optimizations (Ivan Levkivskyi, PR 19633)
• Cache common types (Ivan Levkivskyi, PR 19621)
• Skip more method bodies in third‑party libraries for speed (Ivan Levkivskyi, PR 19586)
• Simplify the representation of callable types (Ivan Levkivskyi, PR 19580)
• Add cache for types of some expressions (Ivan Levkivskyi, PR 19505)
• Use cache for dictionary expressions (Ivan Levkivskyi, PR 19536)
• Use cache for binary operations (Ivan Levkivskyi, PR 19523)
• Cache types of type objects (Ivan Levkivskyi, PR 19514)
• Avoid duplicate work when checking boolean operations (Ivan Levkivskyi, PR 19515)
• Optimize generic inference passes (Ivan Levkivskyi, PR 19501)
• Speed up the default plugin (Jukka Lehtosalo, PRs 19385 and 19462)
• Remove nested imports from the default plugin (Ivan Levkivskyi, PR 19388)
• Micro‑optimize type expansion (Jukka Lehtosalo, PR 19461)
• Micro‑optimize type indirection (Jukka Lehtosalo, PR 19460)
• Micro‑optimize the plugin framework (Jukka Lehtosalo, PR 19464)
• Avoid temporary set creation in subtype checking (Jukka Lehtosalo, PR 19463)
• Subtype checking micro‑optimization (Jukka Lehtosalo, PR 19384)
• Return early where possible in subtype check (Stanislav Terliakov, PR 19400)
• Deduplicate some types before joining (Stanislav Terliakov, PR 19409)
• Speed up type checking by caching argument inference context (Jukka Lehtosalo, PR 19323)

... (truncated)

Commits

• 03fbaa9 bump version to 1.18.1 due to wheels failure
• b44a1fb removed +dev from version
• 7197a99 Removed Unreleased in the Changelog for Release 1.18 (#19827)
• ee61cec Updates to 1.18 changelog (#19826)
• 24eed0b Initial changelog for release 1.18 (#19818)
• 0ca1f2a Expose --fixed-format-cache if compiled (#19815)
• 2ce1bb2 [mypyc] Fix subclass processing in detect_undefined_bitmap (#19787)
• a6b55f0 feat: new mypyc primitives for weakref.proxy (#19217)
• 5a323dd Make --allow-redefinition-new argument public (#19796)
• 8638eb4 [stubtest] temporary --ignore-disjoint-bases flag (#19740)
• Additional commits viewable in compare view

Dependabot will resolve any conflicts with this PR as long as you don't alter it yourself. You can also trigger a rebase manually by commenting @dependabot rebase.

---

Dependabot commands and options

You can trigger Dependabot actions by commenting on this PR:

• @dependabot rebase will rebase this PR
• @dependabot recreate will recreate this PR, overwriting any edits that have been made to it
• @dependabot merge will merge this PR after your CI passes on it
• @dependabot squash and merge will squash and merge this PR after your CI passes on it
• @dependabot cancel merge will cancel a previously requested merge and block automerging
• @dependabot reopen will reopen this PR if it is closed
• @dependabot close will close this PR and stop Dependabot recreating it. You can achieve the same result by closing it manually
• @dependabot show <dependency name> ignore conditions will show all of the ignore conditions of the specified dependency
• @dependabot ignore this major version will close this PR and stop Dependabot creating any more for this major version (unless you reopen the PR or upgrade to it yourself)
• @dependabot ignore this minor version will close this PR and stop Dependabot creating any more for this minor version (unless you reopen the PR or upgrade to it yourself)
• @dependabot ignore this dependency will close this PR and stop Dependabot creating any more for this dependency (unless you reopen the PR or upgrade to it yourself)

[github-actions]

🛡️ Bandit Scan Results Summary

We found 2 High, 2 Medium, and 1 Low severity issues.

Detailed Findings

---

Severity	Issue	File	Line	Confidence	More Info	Test ID
🟡 LOW	Consider possible security implications associated with the subprocess module.	sz_tools/_tool_helpers.py	10	HIGH	More Info	B404
⚪ MEDIUM	Possible SQL injection vector through string-based query construction.	sz_tools/_sz_database.py	352	LOW	More Info	B608
⚪ MEDIUM	Probable insecure usage of temp file/directory.	sz_tools/_tool_helpers.py	732	MEDIUM	More Info	B108
🔴 HIGH	Starting a process with a shell, possible injection detected, security issue.	sz_tools/_tool_helpers.py	658	HIGH	More Info	B605
🔴 HIGH	subprocess call with shell=True identified, security issue.	sz_tools/_tool_helpers.py	642	HIGH	More Info	B602

---

✨ About this Report

This report was generated by the official Bandit GitHub Action to ensure our codebase stays secure.

📕 What is Bandit?

Bandit is a tool designed to find common security issues in Python code. To learn more about how Bandit helps to keep Python code safe, visit the Bandit documentation.

👥 Community Support

Got questions or need help with Bandit Action?

• Join our community on the Discord server.
• Share tips, get advice, and collaborate on security best practices.