Revert "Update deploy workflow reference to specific branch"

This reverts commit 678f021.

Author: ryanjbaxter

.github/workflows/ci.yaml

@@ -21,7 +21,7 @@ on:
 
 jobs:
   deploy:
-    uses: spring-cloud/spring-cloud-github-actions/.github/workflows/deploy.yml@run-workflow-for-other-branch-when-schedule
+    uses: spring-cloud/spring-cloud-github-actions/.github/workflows/deploy.yml@main
     with:
       branches: ${{ inputs.branches }}
     secrets: