Fix build and deploy github actions

.github/dependabot.yml

@@ -0,0 +1,10 @@
+# Set update schedule for GitHub Actions
+
+version: 2
+updates:
+
+  - package-ecosystem: "github-actions"
+    directory: "/"
+    schedule:
+      # Check for updates to GitHub Actions every weekday
+      interval: "daily"

.github/workflows/build.yaml

@@ -6,6 +6,6 @@ jobs:
   build:
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v2
+    - uses: actions/checkout@v2.3.1
     - run: touch index.bs
     - run: make online=1

.github/workflows/deploy.yaml

@@ -10,19 +10,15 @@ jobs:
     runs-on: ubuntu-latest
     steps:
     - name: Checkout
-      uses: actions/checkout@v2
-      with:
-        persist-credentials: false
+      uses: actions/checkout@v2.3.1
 
     - name: Build
       run: |
         touch index.bs
         make online=1
 
     - name: Deploy
-      uses: JamesIves/github-pages-deploy-action@3.7.1
+      uses: JamesIves/github-pages-deploy-action@4.1.0
       with:
-        GITHUB_TOKEN: ${{secrets.GITHUB_TOKEN}}
-        BRANCH: gh-pages
-        FOLDER: .
-        CLEAN: true
+        branch: gh-pages
+        folder: .