ratatui: relax lru dependency to 0.16 via new patch
Kept on upstream 0.29.0 (0.30.0 is a major bump that would cascade to ratatui's own three rdeps, out of scope here).
Added a new patch relax-lru-to-0.16.patch that bumps the lru constraint from upstream's pinned "0.12.0" to "0.16".
Upstream ratatui main has already done this (0.30.0 has lru "0.16").
This is part of the rust-lru 0.12 to 0.16 transition (bug #1117785).