logs with millisecond timestamp

[metachris]

📝 Summary

Add milliseconds to logs time

# before:
2023-06-19T22:42:58+02:00

# after:
2023-06-19T22:44:32.984+02:00

---

✅ I have run these commands

• make lint
• make test-race
• go mod tidy

[codecov-commenter]

Codecov Report

Merging #534 (75b9d72) into develop (54eeaa2) will decrease coverage by 0.45%.
The diff coverage is 65.70%.

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@@             Coverage Diff             @@
##           develop     #534      +/-   ##
===========================================
- Coverage    70.24%   69.79%   -0.45%     
===========================================
  Files            6        8       +2     
  Lines          541     1288     +747     
===========================================
+ Hits           380      899     +519     
- Misses         132      340     +208     
- Partials        29       49      +20     

Flag	Coverage Δ
unittests	69.79% <65.70%> (-0.45%)	⬇️

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

Impacted Files	Coverage Δ
cli/main.go	0.00% <0.00%> (ø)
cli/types.go	0.00% <0.00%> (ø)
server/mock_types.go	100.00% <ø> (ø)
server/types.go	70.00% <70.00%> (ø)
server/service.go	77.10% <75.64%> (+5.09%)	⬆️
server/utils.go	82.58% <85.15%> (+15.01%)	⬆️
server/mock_relay.go	88.44% <90.81%> (+5.58%)	⬆️
server/relay_entry.go	90.00% <100.00%> (+8.75%)	⬆️

... and 1 file with indirect coverage changes