Update .github/workflows/ci.yml

Co-authored-by: Hugo van Kemenade <1324225+hugovk@users.noreply.github.com>

Author: JacobCoffee

.github/workflows/ci.yml

@@ -7,6 +7,7 @@ on:
 
 jobs:
   migrations:
+    if: github.event_name != 'push' || github.event.repository.fork == true
     runs-on: ubuntu-latest
     services:
       postgres: