bump `nim-libp2p` to `2fa2c4425f4bb835c0517efc03009925dcd28239`

[etan-status]

• fix(CI): rename branch from unstable to master in bumper workflow
• fix(transport): various tcp transport races
• chore(gossipsub): cleanups
• fix(yamux): set EoF when remote peer half closes the stream in yamux

[github-actions[bot]]

Unit Test Results

         9 files  ±0    1 325 suites  ±0   25m 20s :stopwatch: - 9m 15s   4 984 tests ±0    4 636 :heavy_check_mark: ±0  348 :zzz: ±0  0 :x: ±0  20 808 runs  ±0  20 404 :heavy_check_mark: ±0  404 :zzz: ±0  0 :x: ±0 

Results for commit 7009922f. ± Comparison against base commit 7da6b706.