Build(deps): Bump third_party/yosys from `0fc5812` to `b2d7858` #6004

Job	Run time
Build Synlig Release	16m 42s
Build tools	10m 27s
Build Plugin	16m 44s
Emit Workflow Info	0s
Build Synlig (ASAN)	16m 43s
Build Package	16m 43s
Style check	1m 36s
Build PySynlig	16m 3s
Verify README Correctness (Installation From Sources)	31m 37s
Formal Verification Tests	0s
Parsing Tests	0s
Large Designs Tests	0s
Diff generated BSG Micro Designs tests	0s
Release Package	0s
Verify README Correctness (Download And Run Release)	0s
	2h 6m 35s

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