dependabot: group GHA updates (#16)

Signed-off-by: William Woodruff <[email protected]>

Author: woodruffw

{{cookiecutter.project_slug}}/.github/dependabot.yml

@@ -8,5 +8,9 @@ updates:
 
   - package-ecosystem: github-actions
     directory: /
+    groups:
+      actions:
+        patterns:
+          - "*"
     schedule:
       interval: daily