Bump version to 2025.2.0-beta.0

package.json

 {
 	"name": "misskey",
-	"version": "2025.2.0-alpha.0",
+	"version": "2025.2.0-beta.0",
 	"codename": "nasubi",
 	"repository": {
 		"type": "git",

packages/misskey-js/package.json

 {
 	"type": "module",
 	"name": "misskey-js",
-	"version": "2025.2.0-alpha.0",
+	"version": "2025.2.0-beta.0",
 	"description": "Misskey SDK for JavaScript",
 	"license": "MIT",
 	"main": "./built/index.js",