Update test_0.yml

Author: lzchen

.github/workflows/test_0.yml

@@ -11,7 +11,7 @@ on:
 
 env:
   CORE_REPO_SHA: main
-  CONTRIB_REPO_SHA: opentelemetrybot/prepare-release-1.30.0-0.51b0 
+  CONTRIB_REPO_SHA: opentelemetrybot/prepare-release-1.30.0-0.51b0
   PIP_EXISTS_ACTION: w
 
 jobs: