message: Update removeSourceBranch option to cater for when not set
diff: @@ -196,7 +196,9 @@ export const createPublishGitlabMergeRequestAction = (options: {
  ctx.input.title,
  {
  description: ctx.input.description,
  - removeSourceBranch: ctx.input.removeSourceBranch,
  + removeSourceBranch: ctx.input.removeSourceBranch
  + ? ctx.input.removeSourceBranch
  + : false,
  },
  ).then((mergeRequest: { web_url: string }) => {
  return mergeRequest.web_url;
  