Update hyper-rustls requirement from 0.23 to 0.24

[dependabot[bot]]

Updates the requirements on hyper-rustls to permit the latest version.

Commits

• 31a0236 Update changelog for 0.24.0
• 70fa4c1 crate: bump version from 0.23.2 -> 0.24.0.
• 68ed9e6 deps: update rustls v0.20.1 -> v0.21.0
• df93f70 Add ConnectorBuilder::enable_all_versions() helper
• 52b5c7a Refresh example certificates (#174)
• d4965b6 CI: replace ubuntu 18.04 w/ 20.04.
• 468c788 CI: replace actions-rs w/ dtolnay/rust-toolchain.
• 3a040dc CI: actions/checkout@v2 -> v3.
• cf50a4d CI: configure Dependabot to monitor GitHub actions.
• aa1506a chore: output curl version in server test failure.
• Additional commits viewable in compare view

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