chore(CI): always run CI, but only deploy on main.

.drone.yml

@@ -1,14 +1,6 @@
 kind: pipeline
 type: docker
-name: deploy
+name: build
-
-trigger:
-  branch:
-    include:
-    - main
-  event:
-    exclude:
-    - pull_request
 
 steps:
 - name: submodules
@@ -80,6 +72,9 @@ steps:
 
 - name: publish
   image: minio/mc
+  when:
+    branch:
+    - main
   environment:
     S3_ENDPOINT:
       from_secret: S3_ENDPOINT