Bump vue-loader from 15.9.6 to 15.9.8

Bumps [vue-loader](https://github.com/vuejs/vue-loader) from 15.9.6 to 15.9.8.
- [Release notes](https://github.com/vuejs/vue-loader/releases)
- [Changelog](https://github.com/vuejs/vue-loader/blob/next/CHANGELOG.md)
- [Commits](vuejs/vue-loader@v15.9.6...v15.9.8)

---
updated-dependencies:
- dependency-name: vue-loader
  dependency-type: direct:development
  update-type: version-update:semver-patch
...

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

package.json

@@ -94,7 +94,7 @@
 		"stylelint-scss": "^3.18.0",
 		"stylelint-webpack-plugin": "^2.1.1",
 		"url-loader": "^4.1.1",
-		"vue-loader": "^15.9.6",
+		"vue-loader": "^15.9.8",
 		"vue-template-compiler": "^2.6.12",
 		"webpack": "^4.44.2",
 		"webpack-cli": "^3.3.12",