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fix: upgrade Go toolchain from 1.26.2 to 1.26.4 (#26066)#26068

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fix: upgrade Go toolchain from 1.26.2 to 1.26.4 (#26066)#26068
github-actions[bot] wants to merge 1 commit into
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@github-actions github-actions Bot commented Jun 4, 2026

Cherry-pick of #26066

Original PR: #26066 — fix: upgrade Go toolchain from 1.26.2 to 1.26.4
Merge commit: 61a3518
Requested by: @Shelnutt2

Upgrades the Go toolchain from 1.26.2 to 1.26.4 to address two stdlib
CVEs:

- **CVE-2026-27145** (Low): `crypto/x509` `VerifyHostname` has quadratic
cost with large DNS SAN lists, enabling DoS with untrusted certificates.
- **CVE-2026-42507** (Low): `net/textproto` includes attacker-controlled
input in errors without escaping, enabling log injection.

### Changes

- `go.mod`: Bump `go` directive from 1.26.2 to 1.26.4
- `mise.toml`: Bump `go` tool version from 1.26.2 to 1.26.4
- `mise.lock`: Regenerated with updated Go checksums

Resolves ENT-104

> Generated by Coder Agents on behalf of @Shelnutt2

(cherry picked from commit 61a3518)
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