node: include semantic version in agent version

[weiihann]

This PR adds the semantic version of the node to the user agent version such that it follows the appropriate format, as shown in the Starknet P2P specifications.

Before: juno After: juno/<semantic-version>

[codecov[bot]]

Codecov Report

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

Project coverage is 75.11%. Comparing base (3608694) to head (1f1d7c0).

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1906      +/-   ##
==========================================
- Coverage   75.13%   75.11%   -0.03%     
==========================================
  Files          99       99              
  Lines        8752     8752              
==========================================
- Hits         6576     6574       -2     
  Misses       1590     1590              
- Partials      586      588       +2     

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