fix: update backup archive to ignore migration secrets files (#5548)

src/users.js

@@ -1052,7 +1052,7 @@ export async function createBackupArchive(handle, response) {
     archive.pipe(response);
 
     // Append files from a sub-directory, putting its contents at the root of archive
-    const ignore = allowKeysExposure ? [] : [SECRETS_FILE];
+    const ignore = allowKeysExposure ? [] : [SECRETS_FILE, 'backups/secrets_migration_*.json'];
     archive.glob('**/*', {
         cwd: directories.root,
         follow: false,