chore(ci/proof): fix kona prestate artifacts publish job

[theochap]

Description

Fix prestate artifacts publication in CI. The path to the prestate artifacts was incorrect

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 76.0%. Comparing base (48a7a09) to head (a48ebc9).
⚠️ Report is 11 commits behind head on develop.

Additional details and impacted files

@@             Coverage Diff             @@
##           develop   #19130      +/-   ##
===========================================
+ Coverage     75.8%    76.0%    +0.2%     
===========================================
  Files          700      188     -512     
  Lines        71986    10946   -61040     
===========================================
- Hits         54574     8324   -46250     
+ Misses       17266     2478   -14788     
+ Partials       146      144       -2     

Flag	Coverage Δ
cannon-go-tests-64	66.4% <ø> (-0.9%)	⬇️
contracts-bedrock-tests	81.6% <ø> (-0.1%)	⬇️
unit	?

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see 518 files with indirect coverage changes

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