Update dependabot.yml (#300)

* Update dependabot.yml

* Update .github/dependabot.yml

Author: jbampton

.github/dependabot.yml

@@ -1,8 +1,12 @@
-# https://docs.github.com/en/code-security/supply-chain-security/keeping-your-dependencies-updated-automatically
 version: 2
 updates:
-  # Maintain dependencies for GitHub Actions
   - package-ecosystem: "github-actions"
     directory: "/"
     schedule:
       interval: "daily"
+    groups:
+      github-dependencies:
+        patterns:
+          - "*"
+    cooldown:
+      default-days: 7