fix(drone): use 'master' branch instead of 'main' for build-and-push trigger

Co-authored-by: Junie <junie@jetbrains.com>

.drone.yml

@@ -21,7 +21,7 @@ trigger:
   event:
     - push
   branch:
-    - main
+    - master
 
 steps:
   - name: build-and-push