build: Updating npm dependencies

* ansi-regex: 5.0.0 → 5.0.1
  * https://npmjs.com/advisories/1002401 (CVE-2021-3807)
* nth-check: 2.0.0 → 2.0.1
  * https://npmjs.com/advisories/1002423 (CVE-2021-3803)

Additional changes:
* composer.json: Updated phpcs command in composer test (T280592).
* composer.json: Added phpcs command to scripts (T280592).

Change-Id: I0336deaf8fda090113d87846ef32e1768c6858a3

composer.json

@@ -37,9 +37,10 @@
 		],
 		"test": [
 			"parallel-lint . --exclude vendor --exclude node_modules",
-			"phpcs -p -s",
+			"@phpcs",
 			"minus-x check ."
 		],
-		"phan": "phan -d . --long-progress-bar"
+		"phan": "phan -d . --long-progress-bar",
+		"phpcs": "phpcs -sp --cache"
 	}
 }