chore(gh-action): test new conditional on [skip ci]

Author: oesteban

.github/workflows/pythonpackage.yml

@@ -12,7 +12,7 @@ on:
 
 jobs:
   build:
-    if: "!contains(github.event.head_commit.message, '[skip ci]')"
+    if: "!startsWith(github.ref, 'refs/tags/') && !contains(github.event.head_commit.message, '[skip ci]')"
     runs-on: ubuntu-latest
     strategy:
       matrix: