chore(build): try to disable older python version on macos-latest in actions

Author: d-biehl

.github/workflows/build-test-package-publish.yml

@@ -32,6 +32,9 @@ jobs:
         os: [macos-latest, ubuntu-latest, windows-latest]
         python-version: ["3.8", "3.9", "3.10", "3.11", "3.12"]
         robot-version: ["rf41", "rf50", "rf60", "rf61", "rf70"]
+        exclude:
+          - os: macos-latest
+            python-version: ["3.8", "3.9"]
 
     steps:
       - uses: actions/checkout@v4