ci: add input for base branch

.github/workflows/draft-new-release.yml

@@ -6,6 +6,10 @@ on:
       version:
         description: "The new version in X.Y.Z format."
         required: true
+      base:
+        description: "The base branch for the pull request."
+        default: "master"
+        required: true
 
 jobs:
   draft-new-release:
@@ -58,7 +62,7 @@ jobs:
         with:
           GITHUB_TOKEN: ${{ secrets.BOTTY_GITHUB_TOKEN }}
           head: release/${{ github.event.inputs.version }}
-          base: master
+          base: ${{ github.event.inputs.base }}
           title: Release version ${{ github.event.inputs.version }}
           reviewers: ${{ github.actor }}
           body: |