Bump go-feature-flag.

[blkt]

Summary

This change was made necessary by a breaking change introduced in version 0.2.0 of go-feature-flag.

Change Type

• Bug fix (resolves an issue without affecting existing features)
• Feature (adds new functionality without breaking changes)
• Breaking change (may impact existing functionalities or require documentation updates)
• Documentation (updates or additions to documentation)
• Refactoring or test improvements (no bug fixes or new functionality)

Testing

Unit tests.

Review Checklist:

• Reviewed my own code for quality and clarity.
• Added comments to complex or tricky code sections.
• Updated any affected documentation.
• Included tests that validate the fix or feature.
• Checked that related changes are merged.

[stacklok-cloud-staging]

Minder Vulnerability Report ✅

Minder analyzed this PR and found it does not add any new vulnerable dependencies.

Vulnerability scan of ef5423c1:

• 🐞 vulnerable packages: 0
• 🛠 fixes available for: 0

[coveralls]

coverage: 53.806% (+0.004%) from 53.802%
when pulling ef5423c on chore/go-feature-flag-in-process
into d598b19 on main.