ci: update the version-bump script argument check (#46)

* Updating the version-bump script for a specific check for 'undefined' which is the default, invalid value for the codefresh pipeline
* added exit 1 to ensure script doesn't try and make any changes after variable check fails

scripts/version-bump.sh

@@ -14,6 +14,9 @@ readonly git_email="tech-ally@lacework.net"
 
 if [[ "${1:-}" == "" ]]; then
   echo "ERROR: Unable to update version. Please provide the new version to update."
+elif [[ "${1:-}" == "undefined" ]]; then
+  echo "ERROR: SCANNER_VERSION variable not passed to codefresh job. Please check the pipeline."
+  exit 1
 fi
 
 _scanner_version=$1