OZG-7262 OZG-7657 Fix possible deadlock

ozgcloud-common-lib/src/main/java/de/ozgcloud/common/binaryfile/GrpcBinaryFileServerDownloader.java

@@ -107,10 +107,10 @@ public class GrpcBinaryFileServerDownloader<T> {
 	void startDownload() {
 		try {
 			doDownload();
+			closeOutputStream();
 			sendChunks();
 		} catch (Exception e) {
 			downloadError.set(new TechnicalException("Error while downloading file contents", e));
-		} finally {
 			closeOutputStream();
 		}
 	}