Add a new step redoing the last migration

.gitea/workflows/tests.yml

@@ -10,7 +10,7 @@ concurrency:
 jobs:
   unit_tests:
     runs-on: ubuntu-latest
-    services:
+    services: &services
       postgres:
         image: postgres
         env:
@@ -50,3 +50,22 @@ jobs:
       - uses: ruby/setup-ruby@v1.207.0
       - run: bundle install
       - run: bundle exec rubocop --force-exclusion --parallel
+  reversible_migrations:
+    runs-on: ubuntu-latest
+    services: *services
+    steps:
+      - uses: actions/checkout@v4
+        with:
+          token: ${{ secrets.GITHUB_TOKEN }}
+      - uses: ruby/setup-ruby@v1.207.0
+      - run: bundle install
+      - name: Wait until Postgres is ready to accept connections
+        run: |
+          apt-get update && apt-get install -f -y postgresql-client
+          until pg_isready -h postgres -U postgres -d postgres
+          do
+            sleep 1
+            echo "Trying again"
+          done
+      - run: bundle exec rake db:schema:load
+      - run: bundle exec rake db:migrate:redo