refactor(core)!: Make getBinaryStream async (#7247)

Story: [PAY-846](https://linear.app/n8n/issue/PAY-846) | Related:
https://github.com/n8n-io/n8n/pull/7225

For the S3 backend for external storage of binary data and execution
data, the `getAsStream` method in the binary data manager interface used
by FS and S3 will need to become async. This is a breaking change for
nodes-base.

packages/core/src/BinaryData/FileSystem.manager.ts

@@ -36,7 +36,7 @@ export class FileSystemManager implements BinaryData.Manager {
 		}
 	}
 
-	getAsStream(fileId: string, chunkSize?: number) {
+	async getAsStream(fileId: string, chunkSize?: number) {
 		const filePath = this.getPath(fileId);
 
 		return createReadStream(filePath, { highWaterMark: chunkSize });