fix(NextcloudBookmarks): Try to avoid draining Chrome's socket pool

Signed-off-by: Marcel Klehr <[email protected]>

src/lib/adapters/NextcloudBookmarks.ts

@@ -83,7 +83,7 @@ export default class NextcloudBookmarksAdapter implements Adapter, BulkImportRes
 
   constructor(server: NextcloudBookmarksConfig) {
     this.server = server
-    this.fetchQueue = new PQueue({ concurrency: 12 })
+    this.fetchQueue = new PQueue({ concurrency: 2 })
     this.bookmarkLock = new AsyncLock()
     this.abortController = new AbortController()
     this.abortSignal = this.abortController.signal