fix CI

Author: eli-darkly

.circleci/config.yml

@@ -20,7 +20,7 @@ workflows:
           name: JRuby 9.2
           docker-image: jruby:9.2-jdk
           jruby: true
-          skip-end-to-end-http-tests: 1  # webrick doesn't work reliably in JRuby 9.2
+          skip-end-to-end-http-tests: "y"  # webrick doesn't work reliably in JRuby 9.2
       - build-test-linux:
           name: JRuby 9.3
           docker-image: jruby:9.3-jdk