Remove db:test:prepare task

For some reason, passing two tasks no longer works in engines
(it is still fine in the debug_provider full app though).

Luckily, it also does not seem to be necessary. So let us see how
it goes without.

Author: oneiros

.github/workflows/fasp_base.yml

@@ -54,7 +54,7 @@ jobs:
         env:
           RAILS_ENV: test
           # REDIS_URL: redis://localhost:6379/0
-        run: bin/rails db:test:prepare test
+        run: bin/rails test
         working-directory: ./fasp_base
 
       - name: Keep screenshots from failed system tests

.github/workflows/fasp_data_sharing.yml

@@ -54,7 +54,7 @@ jobs:
         env:
           RAILS_ENV: test
           # REDIS_URL: redis://localhost:6379/0
-        run: bin/rails db:test:prepare test
+        run: bin/rails test
         working-directory: ./fasp_data_sharing
 
       - name: Keep screenshots from failed system tests