Bump golang.org/x/net from 0.19.0 to 0.20.0 in /server (#307)

Bumps [golang.org/x/net](https://github.com/golang/net) from 0.19.0 to 0.20.0.
- [Commits](golang/net@v0.19.0...v0.20.0)

---
updated-dependencies:
- dependency-name: golang.org/x/net
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>