chore(deps)!: Update libp2p to v0.56.0

[romac]

Closes: #1128

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PR author checklist

For all contributors

• Reference a GitHub issue
• Ensure the PR title follows the conventional commits spec
• Add a release note in RELEASE_NOTES.md if the change warrants it
• Add an entry in BREAKING_CHANGES.md if the change warrants it

For external contributors

• Maintainers of Malachite are allowed to push changes to the branch

[codecov]

Codecov Report

Attention: Patch coverage is 73.52941% with 9 lines in your changes missing coverage. Please review.

Project coverage is 75.24%. Comparing base (cae7a96) to head (a833ae1).
Report is 1 commits behind head on main.

✅ All tests successful. No failed tests found.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1124      +/-   ##
==========================================
- Coverage   75.26%   75.24%   -0.02%     
==========================================
  Files         170      170              
  Lines       17942    17945       +3     
  Branches    17942    17945       +3     
==========================================
- Hits        13504    13502       -2     
- Misses       3562     3566       +4     
- Partials      876      877       +1     

Flag	Coverage Δ
integration	75.04% <73.53%> (-0.04%)	⬇️
mbt	7.67% <0.00%> (-<0.01%)	⬇️

Flags with carried forward coverage won't be shown. Click here to find out more.

Components	Coverage Δ
core	82.44% <ø> (ø)
engine	72.07% <ø> (ø)
app	87.08% <ø> (+0.18%)	⬆️
starknet	73.56% <ø> (ø)