chore: regenerate samples (#85)

* chore: put Locations mixin back

PiperOrigin-RevId: 477369320

Source-Link: googleapis/googleapis@6954c4d

Source-Link: googleapis/googleapis-gen@81e5272
Copy-Tag: eyJwIjoiLmdpdGh1Yi8uT3dsQm90LnlhbWwiLCJoIjoiODFlNTI3MjY3MWJkMWM1YzhhYzE1YTQ0YmQyNTkyMmYwYjkzZWFlNiJ9

* 🦉 Updates from OwlBot post-processor

See https://github.com/googleapis/repo-automation-bots/blob/main/packages/owl-bot/README.md

Co-authored-by: Owl Bot <gcf-owl-bot[bot]@users.noreply.github.com>