fix(net): Drop Firo cryptocurrency nodes from Zebra's address book, because they are not compatible with Zcash

[teor2345]

Motivation

Firo is a network that uses the same network magic values as Zcash, but it's not actually compatible with Zcash. This means that our address book can get full of invalid nodes, and we can waste a lot of resources connecting to them.

Just like we did for Flux, we can drop nodes with the default Firo ports from our address book.

Complex Code or Requirements

This is existing code that just needs some extra ports added to it.

Solution

• Add the default Firo main, test, and dev network ports to our invalid ports list

Review

This is a medium priority network efficiency/security fix.

Reviewer Checklist

• Will the PR name make sense to users?
  • Does it need extra CHANGELOG info? (new features, breaking changes, large changes)
• Are the PR labels correct?
• Does the code do what the ticket and PR says?
  • Does it change concurrent code, unsafe code, or consensus rules?
• How do you know it works? Does it have tests?

[codecov]

Codecov Report

Merging #6398 (03e0c27) into main (fc32e68) will increase coverage by 0.03%.
The diff coverage is 100.00%.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #6398      +/-   ##
==========================================
+ Coverage   77.71%   77.75%   +0.03%     
==========================================
  Files         304      304              
  Lines       39583    39583              
==========================================
+ Hits        30761    30776      +15     
+ Misses       8822     8807      -15