Update deploy.yml

- remove `branches` config on `workflow_dispatch` (apparently it's not a thing anymore?)
- set `contents: write` permissions on build job (for `git push` command)

.github/workflows/deploy.yml

@@ -6,7 +6,6 @@ on:
   push:
     branches: [production]
   workflow_dispatch:
-    branches: [production]
     inputs:
       merge-main:
         description: Merge main branch
@@ -22,7 +21,7 @@ jobs:
   build:
     name: Build
     permissions:
-      contents: read
+      contents: write
       id-token: write
       packages: write
     needs: ci