Bump astroid from 3.3.10 to 3.3.11

Bumps [astroid](https://github.com/pylint-dev/astroid) from 3.3.10 to 3.3.11.
- [Release notes](https://github.com/pylint-dev/astroid/releases)
- [Changelog](https://github.com/pylint-dev/astroid/blob/main/ChangeLog)
- [Commits](pylint-dev/astroid@v3.3.10...v3.3.11)

---
updated-dependencies:
- dependency-name: astroid
  dependency-version: 3.3.11
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

backend/requirements.txt

@@ -1,5 +1,5 @@
 asgiref==3.9.0
-astroid==3.3.10
+astroid==3.3.11
 attrs==25.3.0
 certifi==2025.6.15
 charset-normalizer==3.4.2