This update for erofs-utils fixes the following issues:

Update to release 1.6

* support fragments by using `-Efragments`
* support compressed data deduplication by using `-Ededupe`
* (erofsfuse) support extended attributes
* (mkfs.erofs) support multiple algorithms in a single image
* (mkfs.erofs) support chunk-based sparse files
* (mkfs.erofs) add volume-label setting support 
* (mkfs.erofs) add uid/gid offsetting support 
* (mkfs.erofs) pack files entirely by using `-Eall-fragments` 
* various bugfixes and cleanups;