Use bot account for sync commit author

.github/workflows/dotnet-file.yml

@@ -10,6 +10,7 @@ on:
 env:
   DOTNET_NOLOGO: true
   GH_TOKEN: ${{ secrets.GH_TOKEN }}
+  BOT_AUTHOR: ${{ secrets.BOT_NAME }} <${{ secrets.BOT_EMAIL }}>
 
 jobs:
   sync:
@@ -22,6 +23,14 @@ jobs:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
         run: echo "GH_TOKEN=${GITHUB_TOKEN}" >> $GITHUB_ENV
 
+      - name: 🔍 BOT_AUTHOR
+        if: ${{ env.BOT_NAME == '' || env.BOT_EMAIL == '' }}
+        shell: bash
+        env: 
+          BOT_NAME: ${{ secrets.BOT_NAME }}
+          BOT_EMAIL: ${{ secrets.BOT_EMAIL }}
+        run: echo "BOT_AUTHOR=${GITHUB_AUTHOR} <${GITHUB_AUTHOR}@users.noreply.github.com>" >> $GITHUB_ENV
+
       - name: ⌛ rate
         shell: pwsh
         run: |
@@ -73,6 +82,7 @@ jobs:
           commit-message: ⬆️ Bump files with dotnet-file sync
 
             ${{ env.CHANGES }}
-          title: "Bump files with dotnet-file sync"
+          title: "⬆️ Bump files with dotnet-file sync"
           body: ${{ env.CHANGES }}
           token: ${{ env.GH_TOKEN }}
+          author: ${{ env.BOT_AUTHOR }}