test: only run the one test

.github/actions/test_gem/action.yml

@@ -96,7 +96,7 @@ runs:
             echo "::endgroup::"
           done
         else
-          i=0; while bundle exec rake test
+          i=0; while TEST_OPTS='--name="test_0017_translates all the things"' bundle exec rake test
           do
             echo i: $i
             ((i=i+1))