build(deps): Bump golang.org/x/crypto from 0.55.0 to 0.56.0

[dependabot]

Bumps golang.org/x/crypto from 0.55.0 to 0.56.0.

Commits

• 86efde5 ssh: reject unexpected message types on established channels
• a6cdac6 ssh: drop traffic on undecided channels
• 39dc44e ssh: don't skip the source-address critical option in CheckCert
• afebf4c x509roots/fallback/bundle: make subjectsEqual stricter on Go 1.27+
• 89f4e9b x509roots/fallback: update bundle
• 71488c4 ssh/knownhosts: compare only public key portions for revocation
• 82adefa ssh: synchronize unexpected response test
• c757c98 all: upgrade go directive to at least 1.26.0 [generated]
• 593c81a ssh: correctly ignore pre-banner lines
• 46efc8b acme: add crypto.SignMessage test coverage
• Additional commits viewable in compare view

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[gh-aw-bot]

pr-sous-chef

@copilot Please take the next forward-progress pass on PR #59423.

• Review any remaining feedback on the current HEAD and address what is actionable.
• Re-run the pr-finisher skill and push any fixups needed to move this PR toward merge readiness.
• Refresh the branch with the latest base changes if GitHub allows it.

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[Copilot]

pr-sous-chef
```...

Completed the readiness pass: no actionable review feedback remains, the branch already contains the latest base commit, and local validation passed. No fixup commit was needed.

[gh-aw-bot]

@copilot please refresh this PR branch and run the pr-finisher skill so a maintainer can review quickly.

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[Copilot]

@copilot please refresh this PR branch and run the pr-finisher skill so a maintainer can review quickly.

[!WARNING]...

Refreshed the branch by merging the latest main in 207b0d9; local validation passed with no outstanding review feedback.