Main changes:

* Add Pages rate-limiting for IPv6 based on /64 prefix
* Update module golang.org/x/net to v0.19.0
* Update module golang.org/x/net to v0.19.0
* Update dependency golang to v1.21.5
* Update module golang.org/x/crypto to v0.16.0
* Update module github.com/golang-jwt/jwt/v5 to v5.2.0

Reference: https://gitlab.com/gitlab-org/gitlab-pages/-/compare/38a79230add5dc453d8fafa48f7f3e218a70f0be...bf6cd6ddf529f8958adee206ac0f93953e9ac39c?from_project_id=734943&straight=false

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This is part of the [Gitlab Pages update process](https://gitlab.com/gitlab-org/gitlab-pages/-/blob/master/PROCESS.md)

Changelog: changed