Allow to set a token from input (#1)

Reviewed-on: #1
Co-authored-by: Julien Fastré <julien.fastre@champs-libres.coop>
Co-committed-by: Julien Fastré <julien.fastre@champs-libres.coop>

action.yml

@@ -4,6 +4,9 @@ runs:
   using: 'go'
   main: 'main.go'
 inputs:
+  token:
+    description: 'Access token which allow to create pull requests'
+    default: ${{ github.token }}
   title:
     required: false
     description: The title of the pull request
@@ -23,6 +26,7 @@ inputs:
   head:
     description: >
       The pull request head branch (the one within the new code is developed).
+
   outputs:
     pull-request-number:
       description: 'The pull request number'