deps: upgrade yamux from v0.1.1 to v0.1.2 #24058
Merged
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The main point of this dependency upgrade is to pull in the fixes in hashicorp/yamux#127 which prevents leaking deadlocked goroutines. It has been observed to improve the issue in #23305 but does not seem sufficient to fix it entirely.
Since touching yamux is a rare and scary event (bugs can have pathological consequences at scale), I do not intend to backport this. If we discover the improvements are stable and significant enough, or if further fixes land in yamux, backporting can be done at that time.