[ES|QL] Attempt to fix the code scan report problem (#215278)

## Summary

Closes elastic/kibana-team#1568

Author: stratoula

src/platform/packages/private/kbn-esql-editor/src/helpers.ts

@@ -66,7 +66,7 @@ export const useDebounceWithOptions = (
 // Quotes can be used as separators for multiple warnings unless
 // they are escaped with backslashes. This regexp will match any
 // quoted string that is not escaped.
-const quotedWarningMessageRegexp = /"[^"\\]*(?:\\.[^"\\]*)*?"/g;
+const quotedWarningMessageRegexp = /"([^"\\]|\\.)*"/g;
 
 export const parseWarning = (warning: string): MonacoMessage[] => {
   if (quotedWarningMessageRegexp.test(warning)) {