Skip Pro CI workflows for Dependabot PRs (#2171)

Dependabot PRs can't access the REACT_ON_RAILS_PRO_LICENSE secret,
causing all Pro workflows to fail. Add an actor check to the
detect-changes job in each Pro workflow so the entire workflow is
skipped when triggered by Dependabot.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

Author: justin808

.github/workflows/pro-integration-tests.yml

@@ -26,6 +26,8 @@ defaults:
 
 jobs:
   detect-changes:
+    # Skip for Dependabot PRs — they can't access the Pro license secret
+    if: github.actor != 'dependabot[bot]'
     permissions:
       contents: read
       actions: read

.github/workflows/pro-lint.yml

@@ -26,6 +26,8 @@ defaults:
 
 jobs:
   detect-changes:
+    # Skip for Dependabot PRs — they can't access the Pro license secret
+    if: github.actor != 'dependabot[bot]'
     permissions:
       contents: read
       actions: read

.github/workflows/pro-test-package-and-gem.yml

@@ -26,6 +26,8 @@ defaults:
 
 jobs:
   detect-changes:
+    # Skip for Dependabot PRs — they can't access the Pro license secret
+    if: github.actor != 'dependabot[bot]'
     permissions:
       contents: read
       actions: read