chore: require both build and test before merge (#5545)

## About the changes
Some of our PRs such as #5538 merged without passing the tests. This is
because we were running tests in a different workflow that's not
mandatory to pass before we merge.

With this, we remove duplicated work (we were executing build:backend in
two different workflows) and we enforce our PRs to pass tests before
merging

.github/workflows/build_prs.yaml

@@ -5,10 +5,25 @@ on:
     paths-ignore:
       - frontend/**
       - website/**
+      - coverage/**
 
 jobs:
   build:
     runs-on: ubuntu-latest
+    services:
+      # Label used to access the service container
+      postgres:
+        # Docker Hub image
+        image: postgres
+        # Provide the password for postgres
+        env:
+          POSTGRES_PASSWORD: postgres
+          POSTGRES_INITDB_ARGS: "--no-sync"
+        # Set health checks to wait until postgres has started
+        ports:
+          - 5432:5432
+        options: >-
+          --health-cmd pg_isready --health-interval 10s --health-timeout 5s --health-retries 5
 
     strategy:
       matrix:
@@ -23,3 +38,14 @@ jobs:
       - run: yarn install --frozen-lockfile --ignore-scripts
       - run: yarn lint
       - run: yarn build:backend
+      - run: yarn test:report
+        env:
+          CI: true
+          TEST_DATABASE_URL: postgres://postgres:postgres@localhost:5432/postgres
+          DATABASE_URL: postgres://postgres:postgres@localhost:5432/postgres
+      - name: Upload test report to build # Done this way since external PRs would not be able to write the check. See https://github.com/marketplace/actions/test-reporter#recommended-setup-for-public-repositories
+        uses: actions/upload-artifact@v3
+        if: success() || failure()
+        with:
+          name: test-results
+          path: ./reports/jest-junit.xml

.github/workflows/build_prs_test_report.yaml

@@ -1,46 +0,0 @@
-name: TestReport
-on:
-  pull_request:
-    paths-ignore:
-      - website/**
-      - coverage/**
-
-jobs:
-  testreport:
-    runs-on: ubuntu-latest
-    services:
-      # Label used to access the service container
-      postgres:
-        # Docker Hub image
-        image: postgres
-        # Provide the password for postgres
-        env:
-          POSTGRES_PASSWORD: postgres
-          POSTGRES_INITDB_ARGS: "--no-sync"
-        # Set health checks to wait until postgres has started
-        ports:
-          - 5432:5432
-        options: >-
-          --health-cmd pg_isready --health-interval 10s --health-timeout 5s --health-retries 5
-
-
-    steps:
-      - uses: actions/checkout@v4
-      - name: Use Node.js 18
-        uses: actions/setup-node@v3
-        with:
-          node-version: 18.x
-          cache: 'yarn'
-      - run: yarn install --frozen-lockfile --ignore-scripts
-      - run: yarn build:backend
-      - run: yarn test:report
-        env:
-          CI: true
-          TEST_DATABASE_URL: postgres://postgres:postgres@localhost:5432/postgres
-          DATABASE_URL: postgres://postgres:postgres@localhost:5432/postgres
-      - name: Upload test report to build # Done this way since external PRs would not be able to write the check. See https://github.com/marketplace/actions/test-reporter#recommended-setup-for-public-repositories
-        uses: actions/upload-artifact@v3
-        if: success() || failure()
-        with:
-          name: test-results
-          path: ./reports/jest-junit.xml