chore: bump up Yarn to v4.2.1 (#365)

.yarnrc.yml

@@ -2,4 +2,4 @@ nodeLinker: node-modules
 
 npmAuditRegistry: "https://registry.npmjs.org"
 
-yarnPath: .yarn/releases/yarn-4.1.1.cjs
+yarnPath: .yarn/releases/yarn-4.2.1.cjs

package.json

@@ -107,5 +107,5 @@
     "singleQuote": true,
     "arrowParens": "always"
   },
-  "packageManager": "yarn@4.1.1"
+  "packageManager": "yarn@4.2.1"
 }