Bump actions/setup-python from 3 to 4 (#520)

Author: dependabot[bot]

.github/workflows/galaxy.yml

@@ -14,7 +14,7 @@ jobs:
         uses: actions/checkout@v3
 
       - name: Set up Python 3
-        uses: actions/setup-python@v3
+        uses: actions/setup-python@v4
         with:
           python-version: 3.x
 

.github/workflows/molecule.yml

@@ -35,7 +35,7 @@ jobs:
 
       - name: Set up Python 3
         if: "!(contains(matrix.scenario, 'plus') && github.event.pull_request.head.repo.full_name != github.repository)"
-        uses: actions/setup-python@v3
+        uses: actions/setup-python@v4
         with:
           python-version: 3.x