build(deps-dev): bump conventional-changelog from 4.0.0 to 6.0.0

Bumps [conventional-changelog](https://github.com/conventional-changelog/conventional-changelog/tree/HEAD/packages/conventional-changelog) from 4.0.0 to 6.0.0.
- [Release notes](https://github.com/conventional-changelog/conventional-changelog/releases)
- [Changelog](https://github.com/conventional-changelog/conventional-changelog/blob/master/packages/conventional-changelog/CHANGELOG.md)
- [Commits](https://github.com/conventional-changelog/conventional-changelog/commits/conventional-changelog-v6.0.0/packages/conventional-changelog)

---
updated-dependencies:
- dependency-name: conventional-changelog
  dependency-type: direct:development
  update-type: version-update:semver-major
...

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

package.json

@@ -24,7 +24,7 @@
     "@commitlint/cli": "^17.0.0",
     "@commitlint/config-conventional": "^17.0.0",
     "@types/jest": "^24.0.23",
-    "conventional-changelog": "^4.0.0",
+    "conventional-changelog": "^6.0.0",
     "conventional-changelog-conventionalcommits": "^4.6.3",
     "husky": "^4.3.0",
     "jest": "^26.6.3",