harfbuzz: Update to version 8.1.1

harfbuzz: Update to version 8.1.1

- Update from version 8.0.1 to 8.1.1
- Update of rootfile
- Changelog
    8.1.1
	- Fix shaping of contextual rules at the end of string, introduced in 8.1.0
	- Fix stack-overflow in repacker with malicious fonts.
	- 30% speed up loading Noto Duployan font.
    8.1.0
	- Fix long-standing build issue with the AIX compiler and older Apple clang.
	- Revert optimization that could cause timeout during subsetting with malicious fonts.
	- More optimization work:
	  - 45% speed up in shaping Noto Duployan font.
	  - 10% speed up in subsetting Noto Duployan font.
	  - Another 8% speed up in shaping Gulzar.
	  - 5% speed up in loading Roboto.
	- New API:
	  +hb_ot_layout_collect_features_map()

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