Mask GITHUB_TOKEN env and reduce dependabot frequency

Author: ferferga

.github/dependabot.yml

@@ -4,5 +4,5 @@ updates:
   - package-ecosystem: github-actions
     directory: '/'
     schedule:
-      interval: daily
+      interval: weekly
       time: '00:00'

.github/workflows/maintenance.yml

@@ -74,8 +74,8 @@ jobs:
       - name: Clone repository
       - uses: actions/[email protected]
 
-      - name: Set correct permissions
-        run: chmod +x delete_workflows.sh
+      - name: Prepare environment
+        run: chmod +x delete_workflows.sh && echo "::add-mask::${GITHUB_TOKEN}"
         working-directory: ./maintenance
 
       - name: Run deletion script 🗑
@@ -102,8 +102,8 @@ jobs:
       - name: Clone repository
       - uses: actions/[email protected]
 
-      - name: Set correct permissions
-        run: chmod +x delete_ghcr_dangling_images.sh
+      - name: Prepare environment
+        run: chmod +x delete_ghcr_dangling_images.sh && echo "::add-mask::${GITHUB_TOKEN}"
         working-directory: ./maintenance
 
       - name: Run deletion script 🗑