Spinnaker Release 1.37.10

Echo 2.44.7

Fixes

• retrofit2: fix google cloud build notification agent for missing Retrofit2SyncCall.execute call (#1500) ( 21721cb9 )
• retrofit2: fix the issue of missing Retrofit2SyncCall.execute call in GoogleCloudBuildNotificationAgent ( 21721cb9 )

Other

• retrofit2: add a test to demonstrate the issue of missing Retrofit2SyncCall.execute call in GoogleCloudBuildNotificationAgent ( 21721cb9 )