chore: add app email to setup-github-app action (#499)

Co-authored-by: Gagik Amaryan <[email protected]>

Author: nirinchev

actions/setup-bot-token/action.yml

@@ -14,6 +14,9 @@ outputs:
   app-slug:
     description: GitHub App slug
     value: ${{ steps.app-token.outputs.app-slug }}
+  app-email:
+    description: The generated email for the GitHub App
+    value: ${{ steps.get-user-email.outputs.user-email }}
 runs:
   using: "composite"
   steps:
@@ -30,8 +33,13 @@ runs:
       env:
         GH_TOKEN: ${{ steps.app-token.outputs.token }}
 
+    - name: Get GitHub App User email
+      id: get-user-email
+      run: echo "user-email=${{ steps.get-user-id.outputs.user-id }}+${{ steps.app-token.outputs.app-slug }}[bot]@users.noreply.github.com" >> "$GITHUB_OUTPUT"
+      shell: bash
+
     - name: Set up Git
       run: |
         git config --global user.name '${{ steps.app-token.outputs.app-slug }}[bot]'
-        git config --global user.email '${{ steps.get-user-id.outputs.user-id }}+${{ steps.app-token.outputs.app-slug }}[bot]@users.noreply.github.com>'
+        git config --global user.email '${{ steps.get-user-email.outputs.user-email }}'
       shell: bash