feat: use `web-time` instead of `instant`

[dariusc93]

Description

See https://github.com/sebcrozet/instant/issues/52

Notes & open questions

Change checklist

• [ ] I have performed a self-review of my own code
• [ ] I have made corresponding changes to the documentation
• [ ] I have added tests that prove my fix is effective or that my feature works
• [ ] A changelog entry has been made in the appropriate crates