Update dependabot.yml (#405)

Change to group dependency updates per ecosystem (GHA, go-mod)

Signed-off-by: John Kjell <john@testifysec.com>
Co-authored-by: Tom Meadows <tom@tmlabs.co.uk>

.github/dependabot.yml

@@ -7,18 +7,21 @@ updates:
       interval: "weekly"
     commit-message:
       prefix: "chore"
+    groups:
+      all-gha:
+        patterns:
+        - "*"
 
   - package-ecosystem: "gomod"
     directory: "/"
     schedule:
       interval: "weekly"
     commit-message:
       prefix: "chore"
-    ignore:
-      - dependency-name: "*"
-        update-types:
-        - "version-update:semver-major"
-        - "version-update:semver-minor"
+    groups:
+      all-go-mod:
+        patterns:
+        - "*"
 
   - package-ecosystem: docker
     directory: /