ci: missing versions

Author: soyuka

.github/workflows/subtree.yml

@@ -5,8 +5,11 @@ on:
       - v*
     branches:
       - main
-      - 3.1
-      - 3.2
+      - '3.1'
+      - '3.2'
+      - '3.3'
+      - '3.4'
+      - '4.0'
 
 env:
   COMPOSER_TOKEN: ${{ secrets.GITHUB_TOKEN }}