NO_VARIANT CI fix

Author: denizzzka

.github/workflows/ci.yml

@@ -120,9 +120,9 @@ jobs:
         run: |
           dub run dpq2:integration_tests --build=unittest-cov -- --conninfo="$CONN_STRING"
           dub run dpq2:integration_tests --build=cov -- --conninfo="$CONN_STRING"
+          dub run dpq2:integration_tests --d-version=NO_VARIANT
           dub run dpq2:example --build=release -- --conninfo="$CONN_STRING"
           dub run doveralls
-          dub test --f-version=NO_VARIANT
         shell: bash
       - name: Upload coverage data
         if: matrix.build == 'tests_and_cov'