chore(lint): update biome rules

yoshinorin · yoshinorin · commit 5dd6a14040e2 · 2024-12-29T01:49:35.000+09:00
diff --git a/biome.json b/biome.json
@@ -30,7 +30,7 @@
         "noSelfAssign": "error",
         "noSetterReturn": "error",
         "noSwitchDeclarations": "error",
-        "noUndeclaredVariables": "error",
+        "noUndeclaredVariables": "warn",
         "noUnreachable": "error",
         "noUnreachableSuper": "error",
         "noUnsafeFinally": "error",
