Attempt simpler changeset setup with provided GITHUB_TOKEN

Author: SHession

.github/workflows/build-and-release.yml

@@ -73,25 +73,12 @@ jobs:
       - name: Build
         run: yarn build
 
-      - name: Use GitHub App Token
-        uses: actions/create-github-app-token@v1
-        id: app-token
-        with:
-          app-id: ${{ secrets.GU_CHANGESETS_APP_ID }}
-          private-key: ${{ secrets.GU_CHANGESETS_PRIVATE_KEY }}
-
-      - name: Set git user to Gu Changesets app
-        run: |
-          git config user.name "gu-changesets-release-pr[bot]"
-          git config user.email "gu-changesets-release-pr[bot]@users.noreply.github.com"
-
       - name: Create Release Pull Request or Publish to npm
         id: changesets
         uses: changesets/action@v1
         with:
           publish: yarn changeset publish
           title: "🦋 Release package updates"
           commit: "Bump package versions"
-          setupGitUser: false
         env:
-          GITHUB_TOKEN: ${{ steps.app-token.outputs.token }}
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}