use `"packageManager"`

.node-version

@@ -1 +1 @@
-v18.0.0
+v18.2.0

CHANGELOG.md

@@ -11,7 +11,7 @@ You should also include the user name that made the change.
 
 ## 12.x.x (unreleased)
 ### NOTE
-- From this version, Node 18.0.0 or later is required.
+- From this version, Node 18.2.0 or later is required.
 
 ### Improvements
 - enhance: ドライブに画像ファイルをアップロードするときオリジナル画像を破棄してwebpublicのみ保持するオプション @tamaina

Dockerfile

@@ -1,4 +1,4 @@
-FROM node:18.1.0-alpine3.15 AS base
+FROM node:18.2.0-alpine3.15 AS base
 
 ARG NODE_ENV=production
 

package.json

@@ -6,6 +6,7 @@
 		"type": "git",
 		"url": "https://github.com/misskey-dev/misskey.git"
 	},
+	"packageManager": "yarn@3.2.1",
 	"private": true,
 	"scripts": {
 		"postinstall": "node ./scripts/install-packages.js",