Migrate from s3 sdk v2 to v3 (#6731)

* chore: migrate from s3 sdk v2 to v3

* import signature-v4-crt

* downgrade minor version

* Add s3-presigned-post manually

* Change s3 mock

* Update server/storage/files/S3Storage.ts

* docs

* Upgrade aws-sdk

---------

Co-authored-by: Tom Moor <tom.moor@gmail.com>

server/storage/files/LocalStorage.ts

@@ -132,7 +132,7 @@ export default class LocalStorage extends BaseStorage {
   }
 
   public getFileStream(key: string) {
-    return fs.createReadStream(this.getFilePath(key));
+    return Promise.resolve(fs.createReadStream(this.getFilePath(key)));
   }
 
   private getFilePath(key: string) {