Bump textual from 8.2.4 to 8.2.6 (#102)

Bumps [textual](https://github.com/Textualize/textual) from 8.2.4 to 8.2.6.
- [Release notes](https://github.com/Textualize/textual/releases)
- [Changelog](https://github.com/Textualize/textual/blob/main/CHANGELOG.md)
- [Commits](Textualize/textual@v8.2.4...v8.2.6)

---
updated-dependencies:
- dependency-name: textual
  dependency-version: 8.2.5
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

pyproject.toml

@@ -11,7 +11,7 @@ dependencies = [
     "regex>=2026.5.9,<2027.0",
     "httpx >= 0.28, < 1.0",
     "pydantic>=2.13.4,<3.0",
-    "textual>=8.2.4",
+    "textual>=8.2.6",
     "tzdata>=2026.2",
     "eval_type_backport >= 0.2; python_version < '3.11'",
     "pytz >= 2025.2; python_version < '3.11'",