Main changes:

* Fix project path lookup to work in case insensitive
* Update dependency golang to v1.21.6
* Update module golang.org/x/time to v0.5.0

Reference: https://gitlab.com/gitlab-org/gitlab-pages/-/compare/852bde8a974154b34f8c3f0bbf42014e69f5a240...d8501186fd12f2d17ee48fa27a63488f58b0d0be

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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