chore(release): Skip semantic-release run on pull requests

This should speed up our CI slightly

Author: orangejulius

.travis.yml

@@ -18,4 +18,4 @@ jobs:
     - stage: release
       node_js: 10
       script: curl "https://raw.githubusercontent.com/pelias/ci-tools/master/semantic-release.sh" | bash -
-      if: branch = master
+      if: (branch = master) AND ( type = push )