test: add type stubs for redis, PyYAML, and Pygments

- Install additional type stubs for redis, PyYAML, and Pygments in the test environment
- Enhance type checking and improve test coverage by including these dependencies

Author: tanbro

tests/run.sh

@@ -18,7 +18,7 @@ do
     trap 'rm -rf $TMPDIR' EXIT
     ${PYTHON} -m venv $TMPDIR
     echo
-    $TMPDIR/bin/pip install --no-compile -e . -r tests/requirements.txt ruff mypy pytest pytest-cov
+    $TMPDIR/bin/pip install --no-compile -e . -r tests/requirements.txt ruff mypy pytest pytest-cov types-redis types-PyYAML types-Pygments
     echo
     echo "Lint check:"
     $TMPDIR/bin/ruff check