Update pngquant

[hgy59]

Description

• add cross/pngquant3 built with rust
• keep pngquant v2 in cross/pngquant2
• add cross/libimagequant-source to be used by cross/pngquant3
• adjust build order in diyspk/image-optim

minor adustments in tvheadend:

• update to openssl3
• add remarks for pngquant

Closes #6118

Checklist

• Build rule all-supported completed successfully
• New installation of package completed successfully
• Package upgrade completed successfully (Manually install the package again)
• Package functionality was tested
• Any needed documentation is updated/created

Type of change

• Library/Tool update

[hgy59]

@th0ma7 we never published (current) tvheadend 4.3.20230408-37 (latest published is v4.3.20230408-36)

rev -36 still depends on python310

with this PR tvheadend openssl dependency is updated to openssl3

I propose to finally publish rev -37 with the updates of this PR.

• it will remove potential issue by mixing openssl and openssl3 (from python311)
• it will have the pngquant update
• other update candidates
  • libhdhomerun to v 20231214

[th0ma7]

@hgy59 Don't bother with tvheadend. I'll migrate it to newer python along with ffmpeg6 with #6148

[th0ma7]

@hgy59 I guess we are colliding for a bit with the tvheadend changes with my #6148, we'll have to sync for the merge. I'd rather sync of your changes if you're ready to merge before I am.

[hgy59]

@hgy59 I guess we are colliding for a bit with the tvheadend changes with my #6148, we'll have to sync for the merge. I'd rather sync of your changes if you're ready to merge before I am.

Ok, didn't expect your work on tvheadend so soon, ...