[CI] Run only on master branch

.drone.yml

@@ -12,6 +12,9 @@ steps:
   # run renovate
   - name: 'renovate'
     image: 'registry.hub.docker.com/renovate/renovate'
+    when:
+      branch:
+        - 'master'
 
     # run this command
     commands:
@@ -27,4 +30,4 @@ steps:
       RENOVATE_ENDPOINT: 'https://git.simoncor.net/api/v1'
       RENOVATE_GIT_URL: 'endpoint'
       RENOVATE_GIT_AUTHOR: 'Renovate <renovate@simoncor.net>'
-      RENOVATE_AUTODISCOVER: true
+      RENOVATE_AUTODISCOVER: true