update workflows

.github/workflows/deploy-docs.yaml

@@ -1,25 +1,38 @@
 name: Deploy documentation
+
+# GitHub events that triggers the workflow:
 on:
   push:
-    branches:
-      - main
+    branches: ["main"]
+  pull_request:
+    branches: ["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: Set up Python ${{ matrix.python-version }}
+        uses: actions/setup-python@v4
         with:
-          python-version: 3.11
-      - run: echo "cache_id=$(date --utc '+%V')" >> $GITHUB_ENV 
-      - uses: actions/cache@v3
+          python-version: ${{ matrix.python-version }}
+
+      - name: Store cache ID
+        run: echo "cache_id=$(date --utc '+%V')" >> $GITHUB_ENV
+
+      - name: Create a key
+        uses: actions/cache@v4
         with:
           key: mkdocs-material-${{ env.cache_id }}
           path: .cache
           restore-keys: |
             mkdocs-material-
-      - run: pip install mkdocs-material
-      - run: pip install mkdocstrings-python
-      - run: mkdocs gh-deploy --force
+
+      - name: Deploy documentation
+        run: |
+          pip install mkdocs-material
+          pip install mkdocstrings-python
+          mkdocs gh-deploy --force