Bump versions in release workflow

Author: pllim

.github/workflows/publish.yml

@@ -13,12 +13,12 @@ jobs:
     if: ((github.event_name == 'push' && startsWith(github.ref, 'refs/tags')) || contains(github.event.pull_request.labels.*.name, 'Build wheels'))
 
     steps:
-    - uses: actions/checkout@v2
+    - uses: actions/checkout@v3
       with:
         fetch-depth: 0
-    - uses: actions/setup-python@v2
+    - uses: actions/setup-python@v4
       with:
-        python-version: 3.8
+        python-version: 3.9
 
     - name: Install python-build and twine
       run: python -m pip install build "twine>=3.3"