build(deps-dev): bump standard-version from 6.0.1 to 8.0.1

Bumps [standard-version](https://github.com/conventional-changelog/standard-version) from 6.0.1 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@v6.0.1...v8.0.1)

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

package.json

@@ -57,7 +57,7 @@
     "rollup-plugin-commonjs": "^10.1.0",
     "rollup-plugin-node-resolve": "^5.2.0",
     "rollup-plugin-uglify": "^6.0.3",
-    "standard-version": "^6"
+    "standard-version": "^8"
   },
   "files": [
     "/dist",