chore: bump core peer dependency to 0.4.3

Author: aose-yuu

package.json

@@ -45,7 +45,7 @@
 		"cicheck": "pnpm test && pnpm typecheck && pnpm format:fix"
 	},
 	"peerDependencies": {
-		"@sigrea/core": "^0.4.0",
+		"@sigrea/core": "^0.4.3",
 		"react": "^18.0.0 || ^19.0.0",
 		"react-dom": "^18.0.0 || ^19.0.0"
 	},