Update yarn version

Author: Ledzz

.gitignore

@@ -4,4 +4,14 @@
 
 .DS_Store
 node_modules
-.idea
+.idea
+
+# yarn
+# https://yarnpkg.com/getting-started/qa#which-files-should-be-gitignored
+.pnp.*
+.yarn/*
+!.yarn/patches
+!.yarn/plugins
+!.yarn/releases
+!.yarn/sdks
+!.yarn/versions