build: the libavr pin advances to the v9 era

Built and tested against it in a clean checkout of this port, through its own
submodule rather than a working-tree override, so the pin is what was proved.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
This commit is contained in:
2026-08-01 18:46:36 +02:00
parent 6abf0b5563
commit 3fbbcdade9

2
libavr

Submodule libavr updated: 71cfb2f1ae...3588014039