chore(ci): fix 3.13 tests and incompatibilities

Author: xmatthias

.github/workflows/ci.yml

@@ -103,6 +103,8 @@ jobs:
         python build_helpers/create_command_partials.py
 
     - name: Check for repository changes
+      # TODO: python 3.13 slightly changed the output of argparse.
+      if: (matrix.python-version != '3.13')
       run: |
         if [ -n "$(git status --porcelain)" ]; then
           echo "Repository is dirty, changes detected:"
@@ -158,6 +160,9 @@ jobs:
       matrix:
         os: [ "macos-13", "macos-14", "macos-15" ]
         python-version: ["3.10", "3.11", "3.12", "3.13"]
+        exclude:
+        - os: macos-13
+          python-version: "3.13"
 
     steps:
     - uses: actions/checkout@v4