build(deps): bump rustls from 0.20.7 to 0.20.8

Bumps [rustls](https://github.com/rustls/rustls) from 0.20.7 to 0.20.8.
- [Release notes](https://github.com/rustls/rustls/releases)
- [Changelog](https://github.com/rustls/rustls/blob/main/RELEASE_NOTES.md)
- [Commits](rustls/rustls@v/0.20.7...v/0.20.8)

---
updated-dependencies:
- dependency-name: rustls
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

Cargo.lock

@@ -49,7 +49,7 @@ once_cell = { version = "1.17.0", default-features = false }
 openidconnect = { version = "2.5.0", default-features = false }
 rand = { version = "0.8.5", default-features = false }
 rsa = { version = "0.7.2", default-features = false }
-rustls = { version = "0.20.6", default-features = false }
+rustls = { version = "0.20.8", default-features = false }
 rustls-pemfile = { version = "1.0.2", default-features = false }
 semver = { version = "1.0.16", default-features = false }
 serde = { version = "1.0.152", default-features = false }