chore: update .github/dependabot.yml (#136)

Co-authored-by: joshjohanning-repo-settings-sync[bot] <237077283+joshjohanning-repo-settings-sync[bot]@users.noreply.github.com>

Author: joshjohanning-repo-settings-sync[bot]

.github/dependabot.yml

@@ -5,7 +5,13 @@
 
 version: 2
 updates:
-  - package-ecosystem: "github-actions" # See documentation for possible values
-    directory: "/" # Location of package manifests
+  - package-ecosystem: 'github-actions'
+    directory: '/'
     schedule:
-      interval: "weekly"
+      interval: 'weekly'
+    commit-message:
+      prefix: 'ci'
+    groups:
+      github-actions:
+        patterns:
+          - '*'