chore(deps): configure Dependabot to group updates and reduce PR spam (#1261)

The previous config only covered the root directory with broken group
patterns, causing individual PRs for every transitive dep bump in
examples and e2e-cli. This adds all package.json locations with proper
wildcard grouping so each directory gets at most one bundled PR.

Changes:
- Add github-actions ecosystem (grouped into single PR)
- Add all example directories and e2e-cli
- Use monthly schedule for examples (less churn, not production code)
- Group ALL deps per directory with `*` pattern (not broken `-dev`/`-test` patterns)
- Keep weekly schedule for root workspace (actual SDK code)

Co-authored-by: Claude Opus 4.6 <noreply@anthropic.com>

Author: abueide

.github/dependabot.yml

@@ -1,20 +1,70 @@
 version: 2
 updates:
-  # Root workspace - SDK dependencies only
+  # GitHub Actions - pin and group all action updates together
+  - package-ecosystem: 'github-actions'
+    directory: '/'
+    schedule:
+      interval: 'weekly'
+    commit-message:
+      prefix: 'chore(deps)'
+    groups:
+      actions:
+        patterns:
+          - '*'
+
+  # Root workspace (monorepo packages)
   - package-ecosystem: 'npm'
     directory: '/'
     schedule:
       interval: 'weekly'
     commit-message:
       prefix: 'chore(deps)'
     groups:
-      production-dependencies:
+      all-dependencies:
         patterns:
           - '*'
-        exclude-patterns:
-          - '*-dev'
-          - '*-test'
-      development-dependencies:
+
+  # Examples and tooling - group all into single PR per directory
+  - package-ecosystem: 'npm'
+    directory: '/examples/AnalyticsReactNativeExample'
+    schedule:
+      interval: 'monthly'
+    commit-message:
+      prefix: 'chore(deps)'
+    groups:
+      all-dependencies:
         patterns:
-          - '*-dev'
-          - '*-test'
+          - '*'
+
+  - package-ecosystem: 'npm'
+    directory: '/examples/E2E-compat'
+    schedule:
+      interval: 'monthly'
+    commit-message:
+      prefix: 'chore(deps)'
+    groups:
+      all-dependencies:
+        patterns:
+          - '*'
+
+  - package-ecosystem: 'npm'
+    directory: '/examples/E2E-latest'
+    schedule:
+      interval: 'monthly'
+    commit-message:
+      prefix: 'chore(deps)'
+    groups:
+      all-dependencies:
+        patterns:
+          - '*'
+
+  - package-ecosystem: 'npm'
+    directory: '/e2e-cli'
+    schedule:
+      interval: 'monthly'
+    commit-message:
+      prefix: 'chore(deps)'
+    groups:
+      all-dependencies:
+        patterns:
+          - '*'