chore(op-acceptance-tests): op-acceptor v3.8.1

[scharissis]

Updates op-acceptor to v3.8.1.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 75.48%. Comparing base (1279fec) to head (a86ecdf).
⚠️ Report is 1 commits behind head on develop.

Additional details and impacted files

@@             Coverage Diff             @@
##           develop   #18563      +/-   ##
===========================================
- Coverage    75.78%   75.48%   -0.30%     
===========================================
  Files          189      189              
  Lines        11239    11239              
===========================================
- Hits          8517     8484      -33     
- Misses        2576     2611      +35     
+ Partials       146      144       -2     

Flag	Coverage Δ
cannon-go-tests-64	66.58% <ø> (-0.82%)	⬇️
contracts-bedrock-tests	80.46% <ø> (ø)

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see 5 files with indirect coverage changes

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