Support OpenSSH 9.2+ for SshSocksConnector

[clue]

This changeset adds support for OpenSSH 9.2+ to the SshSocksConnector. The connector waits for the ssh client to report its local SOCKS listener before forwarding any connections, but OpenSSH 9.2 (2023) changed this debug line to include the channel type and its new inactivity timeout (openssh/openssh-portable@2d1ff2b943). Since then, the line never matched and every connection attempt would hang, which affects most current systems such as Debian 12+ (2023) and Ubuntu 24.04+ (2024). The connector now accepts all known formats, including the floating point timeout printed since OpenSSH 10.6 (2026, openssh/openssh-portable@a253258c):

debug1: channel 0: new [port listener]
debug1: channel 0: new port-listener [port listener] (inactive timeout: 0)
debug1: channel 0: new port-listener [port listener] (inactive timeout: 0.000000)

The SshProcessConnector is not affected, as the lines it relies on are unchanged. Older OpenSSH versions continue to work as before and are covered by the new tests, so this should be safe to apply.

Builds on top of #8, #11 and #47
Refs openssh/openssh-portable@2d1ff2b943 and openssh/openssh-portable@a253258c

[Copilot]

🟢 Approval recommended

The focused compatibility change matches documented OpenSSH output and has appropriate regression coverage.

0 open findings

What changed in this PR

Adds compatibility with OpenSSH 9.2+ listener messages while preserving older formats.

Changes:

• Expands SOCKS listener detection for integer and floating-point inactivity timeouts.
• Adds integration coverage for supported and unrelated messages.

File	Description
src/​SshSocksConnector.php	Accepts current OpenSSH listener formats.
tests/​IntegrationSshSocksConnectorTest.php	Tests listener recognition and rejection.

🧠 Review effort: Balanced

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