Bump quinn-udp from 0.5.15 to 0.5.16

Bumps [quinn-udp](https://github.com/quinn-rs/quinn) from 0.5.15 to 0.5.16.
- [Release notes](https://github.com/quinn-rs/quinn/releases)
- [Commits](quinn-rs/quinn@quinn-udp-0.5.15...quinn-udp-0.5.16)

---
updated-dependencies:
- dependency-name: quinn-udp
  dependency-version: 0.5.16
  dependency-type: indirect
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]