Replaced internal serialutils package with the equivalent library

[cmaglie]

Please check if the PR fulfills these requirements

See how to contribute

• The PR has no duplicates (please search among the Pull Requests
  before creating one)
• The PR follows
  our contributing guidelines
• Tests for the changes have been added (for bug fixes / features)
• Docs have been added / updated (for bug fixes / features)
• UPGRADING.md has been updated with a migration guide (for breaking changes)
• configuration.schema.json updated if new parameters are added.

What kind of change does this PR introduce?

Just an equivalent code change.

What is the current behavior?

No changes

What is the new behavior?

Does this PR introduce a breaking change, and is titled accordingly?

Other information

[codecov]

Codecov Report

Attention: 1 lines in your changes are missing coverage. Please review.

Comparison is base (ec157a8) 68.96% compared to head (af3a39e) 68.99%.
Report is 2 commits behind head on master.

Files	Patch %	Lines
commands/upload/upload.go	0.00%	0 Missing and 1 partial ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #2528      +/-   ##
==========================================
+ Coverage   68.96%   68.99%   +0.02%     
==========================================
  Files         204      203       -1     
  Lines       20523    20410     -113     
==========================================
- Hits        14154    14081      -73     
+ Misses       5216     5180      -36     
+ Partials     1153     1149       -4     

Flag	Coverage Δ
unit	68.99% <0.00%> (+0.02%)	⬆️

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

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.