deps(go): bump go from 1.25.7 -> 1.25.8

[aibaars]

What does it do ?

Update golang version from 1.25.7 to 1.25.8 to address some CVEs

https://groups.google.com/g/golang-nuts/c/NgsVkcokGF4/m/UsUGEbKjBgAJ

Motivation

The following issues are flagged up by a Trivy scan. They are addressed by updating the golang version.

ko-app/external-dns (gobinary)

Total: 3 (UNKNOWN: 0, LOW: 1, MEDIUM: 1, HIGH: 1, CRITICAL: 0)

┌─────────┬────────────────┬──────────┬────────┬───────────────────┬────────────────┬─────────────────────────────────────────────────────────────┐
│ Library │ Vulnerability  │ Severity │ Status │ Installed Version │ Fixed Version  │                            Title                            │
├─────────┼────────────────┼──────────┼────────┼───────────────────┼────────────────┼─────────────────────────────────────────────────────────────┤
│ stdlib  │ CVE-2026-25679 │ HIGH     │ fixed  │ v1.25.7           │ 1.25.8, 1.26.1 │ net/url: Incorrect parsing of IPv6 host literals in net/url │
│         │                │          │        │                   │                │ https://avd.aquasec.com/nvd/cve-2026-25679                  │
│         ├────────────────┼──────────┤        │                   │                ├─────────────────────────────────────────────────────────────┤
│         │ CVE-2026-27142 │ MEDIUM   │        │                   │                │ html/template: URLs in meta content attribute actions are   │
│         │                │          │        │                   │                │ not escaped in html/template...                             │
│         │                │          │        │                   │                │ https://avd.aquasec.com/nvd/cve-2026-27142                  │
│         ├────────────────┼──────────┤        │                   │                ├─────────────────────────────────────────────────────────────┤
│         │ CVE-2026-27139 │ LOW      │        │                   │                │ os: FileInfo can escape from a Root in golang os module     │
│         │                │          │        │                   │                │ https://avd.aquasec.com/nvd/cve-2026-27139                  │
└─────────┴────────────────┴──────────┴────────┴───────────────────┴────────────────┴─────────────────────────────────────────────────────────────┘

More

• Yes, this PR title follows Conventional Commits
• Yes, I added unit tests
• Yes, I updated end user documentation accordingly

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[k8s-ci-robot]

Hi @aibaars. Thanks for your PR.

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[ivankatliarchuk]

/ok-to-test

[coveralls]

Pull Request Test Coverage Report for Build 23443907066

Details

• 0 of 0 changed or added relevant lines in 0 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage increased (+0.005%) to 78.224%

---

Totals
Change from base Build 23441614916:	0.005%
Covered Lines:	16409
Relevant Lines:	20977

---

💛 - Coveralls

[ivankatliarchuk]

We do not have ETA for a next release. So at the moment only staging images

/lgtm
/approve

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: ivankatliarchuk

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