Group dependabot updates to reduce repo noise

https://docs.github.com/en/code-security/tutorials/secure-your-dependencies/optimizing-pr-creation-version-updates#grouping-related-dependencies-together

refs apache/shiro#2621

Example Shiro dependabot file at the bottom they are using "groups"

https://github.com/apache/shiro/blob/main/.github/dependabot.yml

https://github.com/apache/sedona/blob/master/.github/dependabot.yml

Only just got this merged for the pre-commit updates in the last day on Shiro and Sedona.

I forgot to add the groups to my last mgem-list PR.

Author: jbampton

.github/dependabot.yml

@@ -5,11 +5,23 @@ updates:
     directory: '/'
     schedule:
       interval: 'daily'
+    groups:
+      github-dependencies:
+        patterns:
+          - '*'
   - package-ecosystem: 'github-actions'
     directory: '/'
     schedule:
       interval: 'daily'
+    groups:
+      github-dependencies:
+        patterns:
+          - '*'
   - package-ecosystem: 'pre-commit'
     directory: '/'
     schedule:
       interval: 'daily'
+    groups:
+      github-dependencies:
+        patterns:
+          - '*'