chore(deps): update rustls requirement from 0.21.10 to 0.22.2 in /rpxy-lib

[dependabot[bot]]

Updates the requirements on rustls to permit the latest version.

Release notes

Sourced from rustls's releases.

0.22.2

Release notes

• Avoid sending an empty certificate_authorities extension as a TLS1.3 server. This is incorrect and breaks interop with Java (#1727).
• Support NISTP521-SHA512 signatures (both for verification and signing), when used with the aws-lc-rs provider (#1706).

What's Changed

• 0.22 bug fix rollup by @​ctz in rustls/rustls#1731

Full Changelog: https://github.com/rustls/rustls/compare/v/0.22.1...v/0.22.2

Commits

• 5cd41a3 Prepare 0.22.2
• d4327d3 bogo: enable TLS13-Empty-Client-CA-List test
• d7c8161 Don't add empty certificate_authorities extension
• 08b12b4 ring/sign.rs: improve testing
• e1a1b02 Correct SignatureScheme::sign() for ED25519/448
• a79271c ring/ticketer.rs: cover AeadTicketer
• 7610662 ring/kx.rs: exercise KxGroup::fmt
• 5fa3322 ci-bench: separately bench use of P384 curve
• d9b3528 Test P521-SHA512 in bogo
• 6b5cc27 De-duplicate knowledge of test-ca/ CA names
• Additional commits viewable in compare view

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