chore: update go to 1.26.6

[bradclawsie]

Description

Update Go to 1.26.6.

Type of change

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Other (security config, docs update, etc)

Checklist before merging

• Test, docs, adr added or updated as needed
• Contributor Guide Steps followed

[greptile-apps]

Greptile Summary

Updates the repository’s mise-managed Go toolchain from 1.26.5 to 1.26.6.

• Changes only the Go version pin in mise.toml.
• Leaves the remaining development-tool versions and environment settings unchanged.

Confidence Score: 5/5

The PR appears safe to merge with no actionable failures identified.

The changed mise pin consistently updates the development and CI toolchain, and the older go.mod directive remains a compatible module minimum rather than a conflicting runtime requirement.

Important Files Changed

Filename	Overview
mise.toml	Updates the Go toolchain patch version to 1.26.6 without introducing an actionable correctness or configuration issue.

_{Reviews (1): Last reviewed commit: "chore: update go to 1.26.6" | Re-trigger Greptile}

[chance-coleman]

should we also be updating the go.mod for Go 1.26.6?

[chance-coleman]

I was wondering why this was being created manually instead of renovate opening a pr so i looked at renovate logs and it would have opened a PR for this but its waiting for the three day stability window. I probably missed something that determined we needed to update this sooner than renovate would?

[bradclawsie]

ah no! I didn't know about that! thanks Chance, I'll just close this and let renovate do its thing.

[bradclawsie]

apparently renovate takes care of these