Use gem command to do a release

rake release attempts to git tag, which is a lot of extra work.

We can tag as repo admins.

Author: radar

.buildkite/pipeline.yml

@@ -20,7 +20,7 @@ steps:
   - label: ":pick:  Build and Push"
     command:
       - "bundle install"
-      - "bundle exec rake release"
+      - "gem build && gem push *.gem"
     branches: master
     plugins:
       - docker#v3.3.0:
@@ -31,4 +31,4 @@ steps:
             - [email protected]
     agents:
       queue: aws
-      Environment: test
+      Environment: test