fix: package.json & package-lock.json to reduce vulnerabilities

The following vulnerabilities are fixed with an upgrade:
- https://snyk.io/vuln/SNYK-JS-PROPERTYEXPR-598800

Author: snyk-bot

package-lock.json

@@ -51,6 +51,6 @@
 		"sprintf-js": "^1.1.2",
 		"typescript": "^4.2.3",
 		"webpack": "^4.46.0",
-		"yup": "^0.27.0"
+		"yup": "^0.28.2"
 	}
 }