Update ci.yml following MkDocs

Author: acmeplus

.github/workflows/ci.yml

@@ -1,23 +1,29 @@
-name: ci
+name: ci 
 on:
   push:
     branches:
-      - master
+      - master 
       - main
 permissions:
   contents: write
 jobs:
   deploy:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v3
-      - uses: actions/setup-python@v4
+      - uses: actions/checkout@v4
+      - name: Configure Git Credentials
+        run: |
+          git config user.name github-actions[bot]
+          git config user.email 41898282+github-actions[bot]@users.noreply.github.com
+      - uses: actions/setup-python@v5
         with:
           python-version: 3.x
-      - uses: actions/cache@v2
+      - run: echo "cache_id=$(date --utc '+%V')" >> $GITHUB_ENV 
+      - uses: actions/cache@v4
         with:
-          key: ${{ github.ref }}
+          key: mkdocs-material-${{ env.cache_id }}
           path: .cache
-      - run: pip install pipenv
-      - run: pipenv install --dev
-      - run: pipenv run mkdocs gh-deploy --force
+          restore-keys: |
+            mkdocs-material-
+      - run: pip install mkdocs-material 
+      - run: mkdocs gh-deploy --force