chore: bump mypy to test with Python 3.10 onwards

Author: aignas

.github/workflows/mypy.yaml

@@ -22,10 +22,10 @@ jobs:
       - uses: jpetrucciani/mypy-check@master
         with:
           requirements: 1.6.0
-          python_version: 3.9
+          python_version: 3.10
           path: 'python/runfiles'
       - uses: jpetrucciani/mypy-check@master
         with:
           requirements: 1.6.0
-          python_version: 3.9
+          python_version: 3.10
           path: 'tests/runfiles'

CHANGELOG.md

@@ -85,6 +85,7 @@ Other changes:
   file. If you have redirects or blocking rules as part of your downloader setup,
   you may need to adjust them. What is more, the default uv version has been bumped
   `0.11.2`.
+* (runfiles): We are stopping the type annotation testing with `mypy` for Python 3.9.
 
 {#v0-0-0-fixed}
 ### Fixed