Update CI workflow to support multiple branches

.github/workflows/ci.yml

@@ -1,22 +1,29 @@
-name: ci
+name: ci 
 on:
-    push:
-        branches:
-            - main
+  push:
+    branches:
+      - master 
+      - main
 permissions:
-    contents: write
+  contents: write
 jobs:
-    deploy:
-        runs-on: ubuntu-latest
-        steps:
-            - uses: actions/checkout@v3
-            - uses: actions/setup-python@v4
-              with:
-                  python-version: 3.x
-            - uses: actions/cache@v2
-              with:
-                  key: ${{ github.ref }}
-                  path: .cache
-
-            - run: pip install mkdocs-material
-            - run: mkdocs gh-deploy --force
+  deploy:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - name: Configure Git Credentials
+        run: |
+          git config user.name github-actions[bot]
+          git config user.email 41898282+github-actions[bot]@users.noreply.github.com
+      - uses: actions/setup-python@v4
+        with:
+          python-version: 3.x
+      - run: echo "cache_id=$(date --utc '+%V')" >> $GITHUB_ENV 
+      - uses: actions/cache@v3
+        with:
+          key: mkdocs-material-${{ env.cache_id }}
+          path: .cache
+          restore-keys: |
+            mkdocs-material-
+      - run: pip install mkdocs-material 
+      - run: mkdocs gh-deploy --force