chore(.github): group dependabot PRs and reduce frequency for thirdpary

.github/dependabot.yml

@@ -1,9 +1,38 @@
 version: 2
 updates:
-  - package-ecosystem: 'gomod'
+  # Track in case we ever add dependencies.
+  - package-ecosystem: "gomod"
     directories:
-      - '/'
-      - '/internal/examples'
-      - '/internal/thirdparty'
+      - "/"
     schedule:
-      interval: 'weekly'
+      interval: "weekly"
+    commit-message:
+      prefix: "chore"
+
+  # Keep examples up-to-date.
+  - package-ecosystem: "gomod"
+    directories:
+      - "/internal/examples"
+    schedule:
+      interval: "monthly"
+    commit-message:
+      prefix: "chore"
+    labels: []
+    groups:
+      examples:
+        patterns:
+          - "*"
+
+  # Tests, these are not critical but we should keep them up-to-date.
+  - package-ecosystem: "gomod"
+    directories:
+      - "/internal/thirdparty"
+    schedule:
+      interval: "monthly"
+    commit-message:
+      prefix: "chore"
+    labels: []
+    groups:
+      thirdparty:
+        patterns:
+          - "*"