fix(core-p2p): too many open files

[rainydio]

Summary

Tracking down core-p2p test failure.

[codecov]

Codecov Report

Merging #3957 into develop will decrease coverage by 83.80%.
The diff coverage is n/a.

@@             Coverage Diff              @@
##           develop    #3957       +/-   ##
============================================
- Coverage    97.56%   13.76%   -83.81%     
============================================
  Files          629      629               
  Lines        14541    14540        -1     
  Branches      1730     1729        -1     
============================================
- Hits         14187     2001    -12186     
- Misses         165    12424    +12259     
+ Partials       189      115       -74     

Flag	Coverage Δ
#functional	6.82% <ø> (+<0.01%)	⬆️
#integration	9.85% <ø> (+<0.01%)	⬆️
#unit	?

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Impacted Files	Coverage Δ
packages/core/src/cli.ts	0.00% <0.00%> (-100.00%)	⬇️
packages/core-p2p/src/errors.ts	0.00% <0.00%> (-100.00%)	⬇️
packages/core-p2p/src/schemas.ts	0.00% <0.00%> (-100.00%)	⬇️
packages/core/src/commands/top.ts	0.00% <0.00%> (-100.00%)	⬇️
packages/core-cli/src/contracts.ts	0.00% <0.00%> (-100.00%)	⬇️
packages/core-forger/src/errors.ts	0.00% <0.00%> (-100.00%)	⬇️
packages/core-p2p/src/constants.ts	0.00% <0.00%> (-100.00%)	⬇️
packages/core-p2p/src/listeners.ts	0.00% <0.00%> (-100.00%)	⬇️
packages/core/src/commands/help.ts	0.00% <0.00%> (-100.00%)	⬇️
packages/core-manager/src/events.ts	0.00% <0.00%> (-100.00%)	⬇️
... and 560 more

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