fix: validation for bump type in check-package-version script

scripts/check-package-version.mjs

@@ -21,7 +21,7 @@ const { values } = parseArgs({
     }
 });
 
-if (!["major", "minor", "patch"].includes(values.bump)) {
+if (values.bump !== undefined && !["major", "minor", "patch"].includes(values.bump)) {
     console.error(`Invalid bump type: ${values.bump}. Allowed values are: major, minor, patch.`);
     process.exit(1);
 }