fix: the renovate user name is renovate[bot]

Author: reshnm

.github/workflows/validate-pr-content.lib.yaml

@@ -15,7 +15,7 @@ jobs:
           echo "DEBUG: PR_BODY content is: $PR_BODY"
           echo "DEBUG: PR_USER is: $PR_USER"
 
-          if [ "$PR_USER" = "renovate" ]; then
+          if [ "$PR_USER" = "renovate[bot]" ]; then
             echo "Validation skipped for user: $PR_USER"
             exit 0
           fi
@@ -28,4 +28,4 @@ jobs:
               echo "Pull request message is missing required section: $SECTION" >&2
               exit 1
             fi
-          done
+          done