ci: Upgrade SLSA Go builder to v2.0.0

[ianlewis]

Description:

Updates the SLSA builder to v2.0.0.

Related Issues:

N/A

Checklist:

• Review the CONTRIBUTING.md documentation.
• Add a reference to a related issue in the repository.
• Add a description of the changes proposed in the pull request.
• Add unit tests if applicable.
• Update documentation if applicable.
• Add a note in the CHANGELOG.md if applicable.
• Sign the Google CLA.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 79.42%. Comparing base (5ed9b45) to head (675e9ea).

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #1513   +/-   ##
=======================================
  Coverage   79.42%   79.42%           
=======================================
  Files          16       16           
  Lines         933      933           
=======================================
  Hits          741      741           
  Misses        140      140           
  Partials       52       52