switch to web-test-runner for tests

Author: keithamus

package.json

@@ -17,7 +17,7 @@
     "prebuild": "npm run clean && npm run lint && mkdir dist",
     "build": "tsc",
     "pretest": "npm run build",
-    "test": "karma start ./test/karma.config.cjs",
+    "test": "web-test-runner",
     "prepublishOnly": "npm run build",
     "postpublish": "npm publish --ignore-scripts --@github:registry='https://npm.pkg.github.com'"
   },