[AIR-3048] qs: use go 1.26.0, update deps

[host6]

AIR-3048 qs: use go 1.26.0, update deps
https://untill.atlassian.net/browse/AIR-3048

[augmentcode]

🤖 Augment PR Summary

Summary: Bumps this module to Go 1.26.0 and refreshes the dependency set per AIR-3048.

Changes:

• Updated the go version directive from 1.24.2 to 1.26.0
• Upgraded key direct deps (e.g., go-git, cobra, testify, golang.org/x/mod)
• Refreshed indirect dependencies to match the updated graph (e.g., crypto/net/sys-related modules)

Technical Notes: This is primarily a toolchain + module graph update; downstream builds will now require a Go 1.26 toolchain.

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[augmentcode]

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