Bump go to 1.25.7

[dstdfx]

There's a critical vulnerability in go 1.25.5 which is fixed in 1.25.7.

Trivy scanner report:

usr/local/bin/aws-iam-authenticator (gobinary)
==============================================
Total: 2 (HIGH: 1, CRITICAL: 1)

┌─────────┬────────────────┬──────────┬────────┬───────────────────┬──────────────────────────────┬────────────────────────────────────────────────────────────┐
│ Library │ Vulnerability  │ Severity │ Status │ Installed Version │        Fixed Version         │                           Title                            │
├─────────┼────────────────┼──────────┼────────┼───────────────────┼──────────────────────────────┼────────────────────────────────────────────────────────────┤
│ stdlib  │ CVE-2025-68121 │ CRITICAL │ fixed  │ v1.25.5           │ 1.24.13, 1.25.7, 1.26.0-rc.3 │ crypto/tls: Unexpected session resumption in crypto/tls    │
│         │                │          │        │                   │                              │ https://avd.aquasec.com/nvd/cve-2025-68121                 │
│         ├────────────────┼──────────┤        │                   ├──────────────────────────────┼────────────────────────────────────────────────────────────┤
│         │ CVE-2025-61730 │ HIGH     │        │                   │ 1.24.12, 1.25.6              │ During the TLS 1.3 handshake if multiple messages are sent │
│         │                │          │        │                   │                              │ in records...                                              │
│         │                │          │        │                   │                              │ https://avd.aquasec.com/nvd/cve-2025-61730                 │
└─────────┴────────────────┴──────────┴────────┴───────────────────┴──────────────────────────────┴────────────────────────────────────────────────────────────┘

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[kmala]

Thanks for the PR. Can you also update the https://github.com/kubernetes-sigs/aws-iam-authenticator/blob/master/go.mod#L3 file?

[kmala]

/ok-to-test
/lgtm

[kmala]

/lgtm
/approve

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[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: dstdfx, kmala

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[dstdfx]

@kmala would it be possible to cut a new release with these changes soon?

[kmala]

@kmala would it be possible to cut a new release with these changes soon?

yes, can you please have a PR to update the version.txt file and i can do the release

[dstdfx]

@kmala would it be possible to cut a new release with these changes soon?

yes, can you please have a PR to update the version.txt file and i can do the release

#988