chore(deps): bump asyncssh from 2.17.0 to 2.18.0 in /examples

[dependabot]

Bumps asyncssh from 2.17.0 to 2.18.0.

Changelog

Sourced from asyncssh's changelog.

Release 2.18.0 (26 Oct 2024)

• Added support for post-quantum ML-KEM key exchange algorithms, interoperable with OpenSSH 9.9.

• Added support for the OpenSSH "limits" extension, allowing the client to query server limits such as the maximum supported read and write sizes. The client will automatically default to the reported maximum size on servers that support this extension.

• Added more ways to specify environment variables via the env option. Sequences of either 'key=value' strings or (key, value) tuples are now supported, in addition to a dict.

• Added support for getting/setting environment variables as byte strings on platforms which support it. Previously, only Unicode strings were accepted and they were always encoded on the wire using UTF-8.

• Added support for non-TCP sockets (such as a socketpair) as the sock parameter in connect calls. Thanks go to Christian Wendt for reporting this problem and proposing a fix.

• Changed compression to be disabled by default to avoid it becoming a performance bottleneck on high-bandwidth connections. This now also matches the OpenSSH default.

• Improved speed of parallelized SFTP reads when read-ahead goes beyond the end of the file. Thanks go to Maximilian Knespel for reporting this issue and providing performance measurements on the code before and after the change.

• Improved cancellation handling during SCP transfers.

• Improved support for selecting the currently available security key when the application lists multiple keys to try. Thanks go to GitHub user zanda8893 for reporting the issue and helping to work out the details of the problem.

• Improved handling of reverse DNS failures in host-based authentication. Thanks go to GitHub user xBiggs for suggesting this change.

• Improved debug logging of byte strings with non-printable characters.

• Switched to using an executor on GSSAPI calls to avoid blocking the event loop.

• Fixed handling of "UserKnownHostsFile none" in config files. This previously caused it to use the default known hosts, rather than disabling known host checking.

... (truncated)

Commits

• 51b7846 Bump version number up to 2.18.0 and update change log and README
• 8593f28 Fix issues related to supporting multiple trusted security keys
• bfa04aa Avoid error on process wait() followed by wait_closed()
• 25cb98f Replace most string forwarding with f-strings
• 09e2fc5 Commit fixes recommended by pyupgrade tool
• fa01aab Fix a few lint issues
• 416db0e Use bcrypt rather than crypt in simple_server example
• f1848c1 Minor coverage tweaks
• 2fa354d Fix handling of "UserKnownHostsFile none" in config
• b77bf85 Fix sporadic unit test failure
• Additional commits viewable in compare view

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[sonarcloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

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