allow releases from both v1 and v2

Author: kmoe

.circleci/config.yml

@@ -91,12 +91,16 @@ workflows:
       - trigger-release:
           filters:
             branches:
-              only: master
+              only:
+                - master
+                - v1-maint
           type: approval
       - "docker-go114 release":
           filters:
             branches:
-              only: master
+              only:
+                - master
+                - v1-maint
           requires:
             - trigger-release
             - "docker-go114 test"