Auto-release preview as Zippy (#45163)

I think we're not triggering the after-release workflow because of
github's loop detection when you use the default GITHUB_TOKEN

Closes #ISSUE

Release Notes:

- N/A

.github/workflows/autofix_pr.yml

@@ -90,7 +90,7 @@ jobs:
     runs-on: namespace-profile-2x4-ubuntu-2404
     steps:
     - id: get-app-token
-      name: autofix_pr::commit_changes::authenticate_as_zippy
+      name: steps::authenticate_as_zippy
       uses: actions/create-github-app-token@bef1eaf1c0ac2b148ee2a0a74c65fbe6db0631f1
       with:
         app-id: ${{ secrets.ZED_ZIPPY_APP_ID }}

.github/workflows/cherry_pick.yml

@@ -30,7 +30,7 @@ jobs:
       with:
         clean: false
     - id: get-app-token
-      name: cherry_pick::run_cherry_pick::authenticate_as_zippy
+      name: steps::authenticate_as_zippy
       uses: actions/create-github-app-token@bef1eaf1c0ac2b148ee2a0a74c65fbe6db0631f1
       with:
         app-id: ${{ secrets.ZED_ZIPPY_APP_ID }}

.github/workflows/release.yml

@@ -478,11 +478,17 @@ jobs:
     if: startsWith(github.ref, 'refs/tags/v') && endsWith(github.ref, '-pre') && !endsWith(github.ref, '.0-pre')
     runs-on: namespace-profile-2x4-ubuntu-2404
     steps:
+    - id: get-app-token
+      name: steps::authenticate_as_zippy
+      uses: actions/create-github-app-token@bef1eaf1c0ac2b148ee2a0a74c65fbe6db0631f1
+      with:
+        app-id: ${{ secrets.ZED_ZIPPY_APP_ID }}
+        private-key: ${{ secrets.ZED_ZIPPY_APP_PRIVATE_KEY }}
     - name: gh release edit "$GITHUB_REF_NAME" --repo=zed-industries/zed --draft=false
       run: gh release edit "$GITHUB_REF_NAME" --repo=zed-industries/zed --draft=false
       shell: bash -euxo pipefail {0}
       env:
-        GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+        GITHUB_TOKEN: ${{ steps.get-app-token.outputs.token }}
   notify_on_failure:
     needs:
     - upload_release_assets