helm: add fuzzer for provenance unmarshalling

[AdamKorcz]

Signed-off-by: AdamKorcz adam@adalogics.com

Summary

Adds a fuzzer for the helm type provenance unmarshalling. Adds it to the OSS-Fuzz build script.

Release Note

Documentation

[dlorenc]

CI looks stuck here, could you amend to try retriggering?

[codecov-commenter]

Codecov Report

Merging #1243 (fcb2229) into main (8a68186) will increase coverage by 0.02%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##             main    #1243      +/-   ##
==========================================
+ Coverage   63.27%   63.29%   +0.02%     
==========================================
  Files          82       82              
  Lines        7670     7670              
==========================================
+ Hits         4853     4855       +2     
+ Misses       2205     2203       -2     
  Partials      612      612              

Flag	Coverage Δ
e2etests	47.78% <ø> (ø)
unittests	42.11% <ø> (+0.02%)	⬆️

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

Impacted Files	Coverage Δ
pkg/types/rekord/v0.0.1/entry.go	68.42% <0.00%> (+0.65%)	⬆️

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[bobcallaway]

@AdamKorcz can you do git commit -s --amend and force push that here so the DCO check re-fires?

[AdamKorcz]

@AdamKorcz can you do git commit -s --amend and force push that here so the DCO check re-fires?

done