chore(deps): bump rustls from 0.19.1 to 0.20.0 (#206)

Bumps [rustls](https://github.com/rustls/rustls) from 0.19.1 to 0.20.0.
- [Release notes](https://github.com/rustls/rustls/releases)
- [Changelog](https://github.com/rustls/rustls/blob/main/OLDCHANGES.md)
- [Commits](rustls/rustls@v/0.19.1...v/0.20.0)

---
updated-dependencies:
- dependency-name: rustls
  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>

Author: dependabot[bot]

Cargo.lock

@@ -33,7 +33,7 @@ acme-lib = "0.8"
 trust-dns-server = { version = "0.20", features = ["resolver", "dns-over-rustls", "dns-over-https-rustls"] }
 parking_lot = "0.11"
 futures-util = "0.3"
-rustls = "0.19"
+rustls = "0.20"
 toml = "0.5"
 anyhow = "1.0"
 ppp = "1"