perf: fix partial success auth

[LeeEirc]

No description provided.

[Copilot]

Pull request overview

This PR updates the SSH server’s authentication callbacks to avoid returning permissions when authentication completes with partial success, and refreshes the module/toolchain and x/* dependencies used by the server.

Changes:

• Return nil permissions when propagating PartialSuccessError from password, public-key, and keyboard-interactive auth callbacks.
• Propagate the same nil-permissions behavior through nested/continued partial-success auth flows.
• Bump the module’s Go version and update golang.org/x/crypto/golang.org/x/sys (and resulting go.sum).

Reviewed changes

Copilot reviewed 2 out of 3 changed files in this pull request and generated 1 comment.

File	Description
server.go	Ensures permissions aren’t returned alongside partial-success auth errors in server auth callbacks.
go.mod	Raises Go version and updates key golang.org/x/* dependencies.
go.sum	Reflects dependency graph changes from the go.mod update/tidy.

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