Fixed a regression making it impossible to sync new versions of versioning pull requests with base branch updates (#705)

* Fixed a regression making it impossible to sync new versions of versioning pull requests with base branch updates when using GitHub API pushes

* update ghcommit

src/github.ts

@@ -253,6 +253,7 @@ export class GitHub {
         base: {
           commit: context.sha,
         },
+        force: true,
         cwd: this.cwd,
       });
       return;