Add GitHub Actions update (#107)

Author: T0biii

.github/dependabot.yml

@@ -5,3 +5,10 @@ updates:
     schedule:
       interval: "daily"
     open-pull-requests-limit: 10
+    
+  - package-ecosystem: "github-actions"
+    directory: "/"
+    schedule:
+      # Check for updates to GitHub Actions once a week
+      interval: "daily"
+    open-pull-requests-limit: 10