chore(deps-dev): bump all-contributors-cli from 6.19.0 to 6.20.0 (#562)

Bumps [all-contributors-cli](https://github.com/all-contributors/all-contributors-cli) from 6.19.0 to 6.20.0.
- [Release notes](https://github.com/all-contributors/all-contributors-cli/releases)
- [Commits](all-contributors/cli@v6.19.0...v6.20.0)

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

Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

package.json

@@ -53,7 +53,7 @@
   "devDependencies": {
     "@typescript-eslint/eslint-plugin": "^4.9.1",
     "@typescript-eslint/parser": "^4.9.1",
-    "all-contributors-cli": "6.19.0",
+    "all-contributors-cli": "6.20.0",
     "codecov": "3.8.1",
     "docz": "2.3.1",
     "docz-theme-default": "1.2.0",