Update websocket_client lib to match blockscout upstream. #623

All 2 575 tests pass, 74 skipped in 3m 41s

      6 files ±0   366 suites ±0 3m 41s ⏱️ +5s
2 649 tests - 1 2 575 ✔️ ±0 74 💤 ±0 0 ❌ - 1
2 663 runs - 1 2 587 ✔️ ±0 76 💤 ±0 0 ❌ - 1

Results for commit d166a6c. ± Comparison against earlier commit 8f256eb.