Merge pull request #38 from buildkite-plugins/renovate/docker-compose-3.x

Update buildkite plugin docker-compose to v3.9.0

Author: nithyaasworld

.buildkite/pipeline.yml

@@ -11,5 +11,5 @@ steps:
 
   - label: ":bash: Tests"
     plugins:
-      docker-compose#v3.4.0:
-        run: tests
+      docker-compose#v3.9.0:
+        run: tests