do not run test:minified in CI (#5490)

Author: Feiyang1

packages/firestore/package.json

@@ -28,7 +28,8 @@
     "pretest": "yarn test:prepare",
     "pretest:ci": "yarn pretest",
     "test": "run-s lint test:all",
-    "test:ci": "node ../../scripts/run_tests_in_ci.js -s test:all",
+    "test:ci": "node ../../scripts/run_tests_in_ci.js -s test:all:ci",
+    "test:all:ci":"run-p test:browser test:lite:browser test:travis",
     "test:all": "run-p test:browser test:lite:browser test:travis test:minified",
     "test:browser": "karma start --single-run",
     "test:browser:debug": "karma start --browsers=Chrome --auto-watch",