Dependabot: Group all "GitHub Actions" Dependabot PRs into a single PR (and other Dependabot tweaks) (#43)

Author: DilumAluthge

.github/dependabot.yml

@@ -1,7 +1,15 @@
-# https://docs.github.com/github/administering-a-repository/configuration-options-for-dependency-updates
 version: 2
 updates:
   - package-ecosystem: "github-actions"
-    directory: "/" # Location of package manifests
+    groups:
+      # Group all GitHub Actions PRs into a single PR:
+      all-github-actions:
+        patterns:
+          - "*"
+    directory: "/"
     schedule:
-      interval: "weekly"
+      interval: "monthly"
+    open-pull-requests-limit: 100
+    labels:
+      - "dependencies"
+      - "github-actions"