Use dependabot to update GitHub actions

Also update labels in dependabot pull requests

Author: meduzen

.github/dependabot.yml

@@ -5,12 +5,24 @@
 
 version: 2
 updates:
-  - package-ecosystem: "npm" # See documentation for possible values
-    directory: "/" # Location of package manifests
+  - package-ecosystem: 'npm' # See documentation for possible values
+    directory: '/' # Location of package manifests
     schedule:
-      interval: "monthly"
+      interval: 'monthly'
     groups:
       production-dependencies:
-        dependency-type: "production"
+        dependency-type: 'production'
       development-dependencies:
-        dependency-type: "development"
+        dependency-type: 'development'
+    labels:
+    - 'dependencies'
+  - package-ecosystem: 'github-actions'
+    directory: '/'
+    schedule:
+      interval: 'monthly'
+    groups:
+      github-actions:
+        patterns:
+        - '*'
+    labels:
+    - 'ci'