clamav: Update to version 1.5.1

clamav: Update to version 1.5.1

- Update from version 1.5.0 to 1.5.1
- No change in rootfile
- Changelog
    1.5.1
	- Fixed a significant performance issue when scanning some PE files.
	- Fixed an issue recording file entries from a ZIP archive central directory
	  which resulted in "Heuristics.Limits.Exceeded.MaxFiles" alerts when using the
	  ClamScan `--alert-exceeds-max` command line option or ClamD `AlertExceedsMax`
	  config file option.
	- Improved performance when scanning TNEF email attachments.
	- Fixed an issue with recording metadata for OOXML office documents.
	- Fixed an issue with signature matches for VBA in OLE2 office documents.
	- Loosened overly restrictive rules for embedded file identification and
	  increased the limit for finding PE files embedded in other PE files.
	- Fixed an issue with extracting some RAR archives embedded in other files.
	- Fixed an issue with calculating fuzzy hashes affecting some images by updating
	  the version for several Rust library dependencies.
	  - This release does not require a newer version of the Rust compiler toolchain
	    than what was required for ClamAV 1.5.0.

Signed-off-by: Adolf Belka <adolf.belka@ipfire.org>
Signed-off-by: Michael Tremer <michael.tremer@ipfire.org>