Update GitHub Actions to use uv sync --all-packages --all-groups

Replace explicit group installation commands with the simpler:
  uv sync --all-packages --all-groups

This installs all workspace packages with all their dependency groups,
which is cleaner than manually specifying --group test --group docs
and avoids needing to list extras like --extra rich.

Updated workflows:
- python-tests.yml: Changed uv sync command
- api-check.yml: Changed uv sync command

Author: RonnyPfannschmidt

.github/workflows/api-check.yml

@@ -40,7 +40,7 @@ jobs:
           echo "tag=$LATEST_TAG" >> $GITHUB_OUTPUT
 
       - name: Install dependencies
-        run: uv sync --group test
+        run: uv sync --all-packages --all-groups
 
       - name: Check API stability against latest release
         run: |

.github/workflows/python-tests.yml

@@ -108,7 +108,7 @@ jobs:
           echo "C:\Program Files\Mercurial\" >> $env:GITHUB_PATH
           git config --system gpg.program "C:\Program Files (x86)\gnupg\bin\gpg.exe"
         if: runner.os == 'Windows'
-      - run: uv sync --group test --group docs --extra rich
+      - run: uv sync --all-packages --all-groups
       - name: Download vcs-versioning packages
         uses: actions/download-artifact@v4
         with: