configuring dependabot to use INT for upggrading dependencies

Author: ashishkurmi

.github/dependabot.yml

@@ -5,12 +5,15 @@ updates:
     schedule:
       interval: weekly
     open-pull-requests-limit: 3
+    target-branch: int
   - package-ecosystem: "github-actions"
     directory: "/"
     schedule:
       interval: weekly
+    target-branch: int
   - package-ecosystem: docker
     directory: "/"
     schedule:
       interval: weekly
     open-pull-requests-limit: 3
+    target-branch: int