Update akhileshns/heroku-deploy digest to c3187cb

Author: renovate[bot]

.github/workflows/production.yml

@@ -28,7 +28,7 @@ jobs:
         run: heroku container:login
 
       - name: Release Backend on Heroku
-        uses: akhileshns/heroku-deploy@e86b991436e126ff9d78399b801a6610a64881c9
+        uses: akhileshns/heroku-deploy@c3187cbbeceea824a6f5d9e0e14e2995a611059c
         with:
           heroku_api_key: ${{ secrets.HEROKU_API_KEY }}
           heroku_app_name: mitopen-production

.github/workflows/release-candidate.yml

@@ -28,7 +28,7 @@ jobs:
         run: heroku container:login
 
       - name: Release Backend on Heroku
-        uses: akhileshns/heroku-deploy@e86b991436e126ff9d78399b801a6610a64881c9
+        uses: akhileshns/heroku-deploy@c3187cbbeceea824a6f5d9e0e14e2995a611059c
         with:
           heroku_api_key: ${{ secrets.HEROKU_API_KEY }}
           heroku_app_name: mitopen-rc