feat(genai): updating SDK version to 1.30.0 (GoogleCloudPlatform#4199)

* updating package.json

* updating SDK version to 1.30.0

---------

Co-authored-by: Guiners <rkoza@softserveinc.com>

Author: Guiners

genai/package.json

@@ -13,7 +13,7 @@
     "test": "c8 mocha -p -j 2 --timeout 2400000 test/*.test.js test/**/*.test.js"
   },
   "dependencies": {
-    "@google/genai": "1.20.0",
+    "@google/genai": "1.30.0",
     "axios": "^1.6.2",
     "google-auth-library": "^10.3.0",
     "luxon": "^3.7.1",