Date 관련 Zod 스키마 수정

z.coerce.date()가 아닌 z.string().datetime()을 사용하도록 변경하여, 번거롭더라도 버그를 줄일 수 있는 방향으로 수정하였습니다.

src/lib/modules/file.ts

@@ -26,7 +26,7 @@ const fetchDirectoryInfo = async (directoryId: "root" | number, masterKey: Crypt
     newInfo = {
       id: directoryId,
       dataKey,
-      dataKeyVersion: metadata!.dekVersion,
+      dataKeyVersion: new Date(metadata!.dekVersion),
       name: await decryptString(metadata!.name, metadata!.nameIv, dataKey),
       subDirectoryIds: subDirectories,
       fileIds: files,
@@ -63,7 +63,7 @@ const fetchFileInfo = async (fileId: number, masterKey: CryptoKey) => {
   const newInfo: FileInfo = {
     id: fileId,
     dataKey,
-    dataKeyVersion: metadata.dekVersion,
+    dataKeyVersion: new Date(metadata.dekVersion),
     contentType: metadata.contentType,
     contentIv: metadata.contentIv,
     name: await decryptString(metadata.name, metadata.nameIv, dataKey),