ci: update gapic-showcase version to 0.30.0 (#1932)

Author: parthea

packages/gapic-generator/.github/workflows/tests.yaml

@@ -14,7 +14,7 @@ concurrency:
   cancel-in-progress: true
 
 env:
-  SHOWCASE_VERSION: 0.25.0
+  SHOWCASE_VERSION: 0.30.0
   PROTOC_VERSION: 3.20.2
 
 jobs:

packages/gapic-generator/noxfile.py

@@ -29,7 +29,7 @@
 nox.options.error_on_missing_interpreters = True
 
 
-showcase_version = os.environ.get("SHOWCASE_VERSION", "0.25.0")
+showcase_version = os.environ.get("SHOWCASE_VERSION", "0.30.0")
 ADS_TEMPLATES = path.join(path.dirname(__file__), "gapic", "ads-templates")