:bandaid: Disable coverage library

The CI pipeline is hanging - see nedbat/coveragepy#1559 for details.

Disabling coverage.py completely for now at least
let's us run tests for ongoing work.

.github/workflows/ci.yml

@@ -96,13 +96,16 @@ jobs:
         run: |
           python src/manage.py compilemessages
           python src/manage.py collectstatic --noinput --link
-          coverage run \
-            --concurrency=multiprocessing \
-            --parallel-mode \
-            src/manage.py test src \
-              --parallel 2 \
-              --exclude-tag=e2e
-          coverage combine
+          src/manage.py test src \
+            --parallel 2 \
+            --exclude-tag=e2e
+          # coverage run \
+          #  --concurrency=multiprocessing \
+          #  --parallel-mode \
+          #  src/manage.py test src \
+          #    --parallel 2 \
+          #    --exclude-tag=e2e
+          # coverage combine
 
         env:
           DJANGO_SETTINGS_MODULE: openforms.conf.ci
@@ -113,8 +116,8 @@ jobs:
       - name: Run JS tests
         run: npm test
 
-      - name: Publish coverage report
-        uses: codecov/codecov-action@v3
+      # - name: Publish coverage report
+      #   uses: codecov/codecov-action@v3
 
       - name: Generate OAS
         run: ./bin/generate_oas.sh openapi.yaml