fix(p2p): more fault-tolerant establish_connections

[storopoli]

Description

WIP trying to make more fault-tolerant establish_connections.
See also alpenlabs/strata-p2p#62.

Type of Change

• Bug fix (non-breaking change which fixes an issue)
• New feature/Enhancement (non-breaking change which adds functionality or enhances an existing one)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• Documentation update
• Refactor
• New or updated tests
• Dependency Update

Notes to Reviewers

Checklist

• I have performed a self-review of my code.
• I have commented my code where necessary.
• I have updated the documentation if needed.
• My changes do not introduce new warnings.
• I have added (where necessary) tests that prove my changes are effective or that my feature works.
• New and existing tests pass with my changes.

Related Issues

[codecov]

Codecov Report

Attention: Patch coverage is 18.75000% with 39 lines in your changes missing coverage. Please review.

Project coverage is 53.36%. Comparing base (01a19e6) to head (a00f9e8).
Report is 1 commits behind head on main.

Files with missing lines	Patch %	Lines
crates/p2p-service/src/bootstrap.rs	0.00%	32 Missing ⚠️
bin/alpen-bridge/src/mode/operator.rs	0.00%	6 Missing ⚠️
crates/duty-tracker/src/contract_manager.rs	0.00%	1 Missing ⚠️

@@            Coverage Diff             @@
##             main     #139      +/-   ##
==========================================
- Coverage   53.43%   53.36%   -0.07%     
==========================================
  Files         145      145              
  Lines       24153    24201      +48     
==========================================
+ Hits        12905    12914       +9     
- Misses      11248    11287      +39     

Files with missing lines	Coverage Δ
bin/alpen-bridge/src/config.rs	94.73% <ø> (ø)
crates/p2p-service/src/config.rs	100.00% <100.00%> (ø)
crates/duty-tracker/src/contract_manager.rs	0.00% <0.00%> (ø)
bin/alpen-bridge/src/mode/operator.rs	0.00% <0.00%> (ø)
crates/p2p-service/src/bootstrap.rs	0.00% <0.00%> (ø)

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[storopoli]

Closing in favor of #140