build(deps-dev): bump standard-version from 4.4.0 to 8.0.1

Bumps [standard-version](https://github.com/conventional-changelog/standard-version) from 4.4.0 to 8.0.1.
- [Release notes](https://github.com/conventional-changelog/standard-version/releases)
- [Changelog](https://github.com/conventional-changelog/standard-version/blob/master/CHANGELOG.md)
- [Commits](conventional-changelog/standard-version@v4.4.0...v8.0.1)

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

Author: dependabot[bot]

package.json

@@ -89,7 +89,7 @@
     "prettier": "^1.15.2",
     "protractor": "~5.4.1",
     "rxjs": "^6.2.0",
-    "standard-version": "^4.3.0",
+    "standard-version": "^8.0.1",
     "stylelint": "^9.8.0",
     "stylelint-config-prettier": "^4.0.0",
     "stylelint-config-recommended-scss": "^3.2.0",