Update stdlib to ≥1.24.4 due to CVE-2025-22874 (crypto/x509 vulnerability)

[revan57]

The stdlib dependency should be updated to version 1.24.4 or later to address a high-severity vulnerability:

• CVE: CVE-2025-22874
• Severity: High
• Affected module: crypto/x509

Current version: v1.24.0
Fixed in: v1.24.4

[dossy]

https://pkg.go.dev/vuln/GO-2025-3749

Calling Verify with a VerifyOptions.KeyUsages that contains ExtKeyUsageAny unintentionally disabledpolicy validation. This only affected certificate chains which contain policy graphs, which are rather uncommon.

[dossy]

Closed by #652.