Update dependency all-contributors-cli to v6.20.0 (#130)

Co-authored-by: Renovate Bot <bot@renovateapp.com>

Author: renovate[bot]

package.json

@@ -33,7 +33,7 @@
     "@angular/compiler-cli": "~12.0.0",
     "@types/jasmine": "~3.6.0",
     "@types/node": "^12.11.1",
-    "all-contributors-cli": "6.17.0",
+    "all-contributors-cli": "6.20.0",
     "jasmine-core": "~3.7.0",
     "karma": "~6.3.0",
     "karma-chrome-launcher": "~3.1.0",