OpenBLAS: update to 0.3.29

[szhorvat]

Description

Type(s)

• bugfix
• enhancement
• security fix

Tested on

macOS 14.7.4 23H420 arm64
Xcode 16.2 16C5032a

Verification

Have you

• followed our Commit Message Guidelines?
• squashed and minimized your commits?
• checked that there aren't other open pull requests for the same change?
• referenced existing tickets on Trac with full URL in commit message?
• checked your Portfile with port lint?
• tried existing tests with sudo port test?
• tried a full install with sudo port -vst install?
• tested basic functionality of all binary files?
• checked that the Portfile's most important variants haven't been broken?

[macportsbot]

Notifying maintainers:
@michaelld for port OpenBLAS.
@NicosPavlov for port OpenBLAS.

[szhorvat]

Both OpenBLAS and OpenBLAS-devel are updated, the latter to today's latest commit. Tests pass. I also ran the tests of one dependent package, igraph, using OpenBLAS only (not -devel).