chore(deps): update actions/setup-python action to v4 (#27)

Co-authored-by: Renovate Bot <bot@renovateapp.com>

Author: renovate[bot]

.github/workflows/publish-new-version.yml

@@ -12,7 +12,7 @@ jobs:
         with:
           fetch-depth: 0
       - name: Set up Python
-        uses: actions/setup-python@v3
+        uses: actions/setup-python@v4
         with:
           python-version: "3.x"
       - name: Install dependencies

.github/workflows/publish-next.yml

@@ -13,7 +13,7 @@ jobs:
         with:
           fetch-depth: 0
       - name: Set up Python
-        uses: actions/setup-python@v3
+        uses: actions/setup-python@v4
         with:
           python-version: "3.x"
       - name: Install dependencies