fix: handle inputs correctly for release event trigger

Author: sai-kumar-peddireddy

.github/workflows/cd.yaml

@@ -24,7 +24,7 @@ jobs:
   maven-cd:
     uses: jenkins-infra/github-reusable-workflows/.github/workflows/maven-cd.yml@v1
     with:
-      validate_only: ${{ inputs.validate_only == true }}
+      validate_only: ${{ github.event_name == 'workflow_dispatch' && inputs.validate_only == true }}
     secrets:
       MAVEN_USERNAME: ${{ secrets.MAVEN_USERNAME }}
       MAVEN_TOKEN: ${{ secrets.MAVEN_TOKEN }}