Update dependency golang to v1.26.5 (main)

[renovate]

This PR contains the following updates:

Package	Update	Change
golang	minor	1.25.7 → 1.26.5

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Release Notes

golang/go (golang)

v1.26.5

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v1.26.4

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v1.26.3

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v1.26.2

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v1.26.1

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v1.26.0

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v1.25.12

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v1.25.11

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v1.25.10

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v1.25.9

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v1.25.8

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Configuration

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[fullsend-ai-review]

🤖 Finished Review · ✅ Success · Started 10:03 PM UTC · Completed 10:06 PM UTC
Commit: 7c8ccca · View workflow run →

[fullsend-ai-review]

Review — ✅ Approve

PR: #1689 — Update dependency golang to v1.26.5 (main)
Author: renovate[bot]
Risk: Low

Summary

This is an automated Renovate dependency update that bumps the Go toolchain version in .tool-versions from 1.25.7 to 1.26.5 (minor version upgrade).

Analysis

Correctness — The change is a single-line version bump in .tool-versions, which controls the Go toolchain version for local development via asdf/mise. CI workflows (pre-merge-ci.yaml, push-bundles.yaml) use go-version-file: go.mod to determine the Go version, so this change does not affect CI behavior. The go.mod file declares go 1.25.5 as the module's minimum supported version, and Go 1.26.5 is fully backward compatible with code targeting 1.25.5.

Security — Upgrading the Go toolchain to a newer minor version typically includes accumulated security patches. No security concerns with this change.

Intent & Scope — This is an automated update from Renovate, consistent with the repository's renovate.json configuration. The scope is appropriately narrow — a single version string in a tooling configuration file.

Style — The change follows the existing format of .tool-versions.

Documentation — No documentation updates required for a tooling version bump.

Cross-repo contracts — No API, schema, or interface changes.

Notes

• The go.mod declares go 1.25.5 while .tool-versions moves to 1.26.5. This is standard practice — .tool-versions specifies the developer toolchain version, while go.mod declares the module's minimum supported Go version. These are intentionally managed separately.
• This is a minor version bump (1.25 → 1.26), which may introduce new language features and deprecations in the local dev environment. Since CI uses the go.mod version, compatibility is not at risk.