Update greetings.yml

Author: osopromadze

.github/workflows/greetings.yml

@@ -9,5 +9,5 @@ jobs:
       - uses: actions/first-interaction@v1
         with:
           repo-token: ${{ secrets.GITHUB_TOKEN }}
-          issue-message: 'Welcome to Spring-Boot-Blog-REST-API community! Thanks so much for creating your first issue :)'
-          pr-message: 'Thanks so much for creating your first PR, the Spring-Boot-Blog-REST-API community thanks you :)'
+          issue-message: 'Welcome @${{ github.actor }} to Spring-Boot-Blog-REST-API community! Thanks so much for creating your first issue :)'
+          pr-message: 'Thanks so much @${{ github.actor }} for creating your first PR, the Spring-Boot-Blog-REST-API community thanks you :)'