Support RPC 0.8.1

[franciszekjob]

Describe your changes

Support RPC 0.8.1

Linked issues

Closes

Breaking changes

• [x] This issue contains breaking changes

EstimateFeeResponse:

• gas amount fields are now of type Uint64
• gas price fields are now of type Uint128
• overallFee fields is not of type Uint128

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Project coverage is 65.19%. Comparing base (d5b8753) to head (5e01f93). Report is 20 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #551      +/-   ##
==========================================
- Coverage   67.66%   65.19%   -2.47%     
==========================================
  Files          91       94       +3     
  Lines        3260     3066     -194     
  Branches      373      374       +1     
==========================================
- Hits         2206     1999     -207     
- Misses        877      886       +9     
- Partials      177      181       +4     

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[franciszekjob]

note: Change for type of websockets subscription id doesn't apply to us, as there's no support for it ATM.