Add v6.0.4 upgrade

[philipsu522]

Describe your changes and provide context

Testing performed to validate your change

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 61.70%. Comparing base (e71a1cc) to head (5a0a8a3).
Report is 1 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #2081      +/-   ##
==========================================
+ Coverage   61.69%   61.70%   +0.01%     
==========================================
  Files         265      265              
  Lines       24690    24696       +6     
==========================================
+ Hits        15232    15239       +7     
+ Misses       8326     8325       -1     
  Partials     1132     1132              

Files with missing lines	Coverage Δ
app/upgrades.go	30.55% <ø> (ø)
evmrpc/simulate.go	71.07% <100.00%> (+0.63%)	⬆️

... and 2 files with indirect coverage changes