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>

package.json

@@ -114,7 +114,7 @@
     "rollup-plugin-terser": "5.1.2",
     "rollup-plugin-uglify": "6.0.0",
     "shx": "0.3.2",
-    "standard-version": "4.4.0",
+    "standard-version": "8.0.1",
     "ts-jest": "23.10.5",
     "tslint": "5.12.0",
     "tslint-config-prettier": "1.17.0",