Bump elm-test in /ruby_event_store-browser/elm

Bumps [elm-test](https://github.com/rtfeldman/node-test-runner) from 0.19.1-revision7 to 0.19.1-revision8.
- [Release notes](https://github.com/rtfeldman/node-test-runner/releases)
- [Changelog](https://github.com/rtfeldman/node-test-runner/blob/master/CHANGELOG.md)
- [Commits](rtfeldman/node-test-runner@0.19.1-revision7...0.19.1-revision8)

---
updated-dependencies:
- dependency-name: elm-test
  dependency-type: direct:development
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <support@github.com>

ruby_event_store-browser/elm/package.json

@@ -9,7 +9,7 @@
     "chokidar-cli": "^3.0.0",
     "elm": "^0.19.1-5",
     "elm-tailwind-modules": "^0.3.2",
-    "elm-test": "^0.19.1-revision7",
+    "elm-test": "^0.19.1-revision8",
     "postcss": "^8.3.8",
     "tailwindcss": "^2.2.16",
     "uglify-js": "^3.16.1"