Angular v13 peerDependency support was removed

Support for Angular v13 was added in [#1201 ](https://github.com/valor-software/ng2-file-upload/pull/1201/files) for version 3.0.0 but has since been removed again. Now there is only Angular v14 support in the peerDependency.
![image](https://user-images.githubusercontent.com/16106688/232360734-cd250f4e-91a9-49b9-91df-77be53a327e2.png)
