ci: use GitHub app for commits (#3373)

Author: dsanders11

.github/workflows/gh-pages.yml

@@ -11,15 +11,23 @@ jobs:
     concurrency:
       group: ${{ github.workflow }}-${{ github.ref }}
     steps:
-      - uses: actions/checkout@93ea575cb5d8a053eaa0ac8fa3b40d7e05a33cc8 #v3.1.0
+      - name: Generate GitHub App token
+        uses: electron/github-app-auth-action@384fd19694fe7b6dcc9a684746c6976ad78228ae # v1.1.1
+        id: generate-token
+        with:
+          creds: ${{ secrets.GH_APP_CREDS }}
+          export-git-user: true
+
+      - uses: actions/checkout@8ade135a41bc03ea155e62e844d188df1ea18608 # v4.1.0
         with:
           submodules: true
           fetch-depth: 0
+          token: ${{ steps.generate-token.outputs.token }}
 
       - name: Use Node.js LTS
-        uses: actions/setup-node@8c91899e586c5b171469028077307d293428b516 #v.3.5.1
+        uses: actions/setup-node@5e21ff4d9bc1a8cf6de233a3057d20ec6b3fb69d # v3.8.1
         with:
-          node-version: 16.x
+          node-version: 20.x
           cache: yarn
 
       - name: Build
@@ -29,8 +37,10 @@ jobs:
           yarn docs
 
       - name: Deploy
-        uses: peaceiris/actions-gh-pages@v3
+        uses: peaceiris/actions-gh-pages@373f7f263a76c20808c831209c920827a82a2847 # v3.9.3
         with:
-          github_token: ${{ secrets.GITHUB_TOKEN }}
+          github_token: ${{ steps.generate-token.outputs.token }}
           publish_dir: ./docs
           cname: js.electronforge.io
+          user_name: ${{ env.GIT_COMMITTER_NAME }}
+          user_email: ${{ env.GIT_COMMITTER_EMAIL }}