build(deps-dev): bump vue-loader from 15.7.1 to 15.7.2

Bumps [vue-loader](https://github.com/vuejs/vue-loader) from 15.7.1 to 15.7.2.
- [Release notes](https://github.com/vuejs/vue-loader/releases)
- [Changelog](https://github.com/vuejs/vue-loader/blob/master/CHANGELOG.md)
- [Commits](vuejs/vue-loader@v15.7.1...v15.7.2)

Signed-off-by: dependabot-preview[bot] <[email protected]>

Author: dependabot-preview[bot]

package-lock.json

@@ -44,7 +44,7 @@
     "nightwatch": "^1.2.4",
     "rewire": "^4.0.1",
     "vue": "^2.6.10",
-    "vue-loader": "^15.7.1",
+    "vue-loader": "^15.7.2",
     "vue-template-compiler": "^2.6.10",
     "web-ext": "^3.1.1",
     "webextension-polyfill": "^0.5.0",