Add concurrency configuration to build workflow

[Copilot]

Redundant CI runs on the same ref waste resources — new pushes to a branch would queue behind still-running runs for the previous commit.

Changes

• .github/workflows/build.yml: Added top-level concurrency block that groups runs by workflow + ref and cancels any in-progress run when a new one is triggered.

concurrency:
  group: ${{ github.workflow }}-${{ github.ref }}
  cancel-in-progress: true

Original prompt

Repository: angr/pypcode

Goal: Add GitHub Actions concurrency configuration to the existing workflow file so runs on the same ref are grouped and in-progress runs are canceled.

Target file:

• .github/workflows/build.yml

Requested snippet to add (exact):

concurrency:
  group: ${{ github.workflow }}-${{ github.ref }}
  cancel-in-progress: true

Requirements:

1. Insert the concurrency block at the workflow top level (same level as name, on, permissions, jobs).
2. Ensure YAML is valid and formatting consistent with the existing file.
3. Open a pull request with these changes.

Context:

• Workflow currently starts with name: Build then on: [push, pull_request] then permissions: then jobs:.
• Base branch is master.

PR title suggestion: "Add concurrency to build workflow"

The following is the prior conversation context from the user's chat exploration (may be truncated):

User: ```

concurrency:
group: ${{ github.workflow }}-${{ github.ref }}
cancel-in-progress: true

Create a PR to add concurrency configuration to the build.yml workflow



Assistant: I’m waiting for you to approve the pull request creation action in the confirmation dialog; once you do, I’ll add the `concurrency` block to `.github/workflows/build.yml` and open the PR.

This pull request was created from Copilot chat.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 86.57%. Comparing base (50cfc2f) to head (b53aec7).
⚠️ Report is 1 commits behind head on master.
✅ All tests successful. No failed tests found.

Additional details and impacted files

@@           Coverage Diff           @@
##           master     #263   +/-   ##
=======================================
  Coverage   86.57%   86.57%           
=======================================
  Files           5        5           
  Lines         514      514           
  Branches       82       82           
=======================================
  Hits          445      445           
  Misses         27       27           
  Partials       42       42           

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