fix: simplify dependabot to only track SDK dependencies (#1226)

Remove example/E2E apps from dependabot automation:
- Example apps exist to test specific RN versions and shouldn't auto-update
- Dependencies are updated manually when upgrading test environments
- Only track root workspace (the actual SDK) for automated updates

Result: 2 grouped PRs/week instead of 10+ individual PRs
- production-dependencies group
- development-dependencies group

Co-authored-by: Claude Sonnet 4.5 <noreply@anthropic.com>

Author: abueide

.github/dependabot.yml

@@ -1,6 +1,6 @@
 version: 2
 updates:
-  # Root workspace
+  # Root workspace - SDK dependencies only
   - package-ecosystem: 'npm'
     directory: '/'
     schedule:
@@ -18,84 +18,3 @@ updates:
         patterns:
           - '*-dev'
           - '*-test'
-
-  # Example app
-  - package-ecosystem: 'npm'
-    directory: '/examples/AnalyticsReactNativeExample'
-    schedule:
-      interval: 'weekly'
-    commit-message:
-      prefix: 'chore(deps/example)'
-    groups:
-      example-dependencies:
-        patterns:
-          - '*'
-
-  # E2E apps
-  - package-ecosystem: 'npm'
-    directory: '/examples/E2E-compat'
-    schedule:
-      interval: 'weekly'
-    commit-message:
-      prefix: 'chore(deps/e2e-compat)'
-    groups:
-      e2e-dependencies:
-        patterns:
-          - '*'
-
-  - package-ecosystem: 'npm'
-    directory: '/examples/E2E-latest'
-    schedule:
-      interval: 'weekly'
-    commit-message:
-      prefix: 'chore(deps/e2e-latest)'
-    groups:
-      e2e-dependencies:
-        patterns:
-          - '*'
-
-  # E2E CLI
-  - package-ecosystem: 'npm'
-    directory: '/e2e-cli'
-    schedule:
-      interval: 'weekly'
-    commit-message:
-      prefix: 'chore(deps/e2e-cli)'
-    groups:
-      e2e-cli-dependencies:
-        patterns:
-          - '*'
-
-  # Bundler (Ruby dependencies)
-  - package-ecosystem: 'bundler'
-    directory: '/examples/E2E-compat'
-    schedule:
-      interval: 'weekly'
-    commit-message:
-      prefix: 'chore(deps/e2e-compat-ruby)'
-    groups:
-      ruby-dependencies:
-        patterns:
-          - '*'
-
-  - package-ecosystem: 'bundler'
-    directory: '/examples/E2E-latest'
-    schedule:
-      interval: 'weekly'
-    commit-message:
-      prefix: 'chore(deps/e2e-latest-ruby)'
-    groups:
-      ruby-dependencies:
-        patterns:
-          - '*'
-
-  - package-ecosystem: 'bundler'
-    directory: '/examples/AnalyticsReactNativeExample'
-    schedule:
-      interval: 'weekly'
-    commit-message:
-      prefix: 'chore(deps/example-ruby)'
-    groups:
-      ruby-dependencies:
-        patterns:
-          - '*'