chore: bump sigs.k8s.io/structured-merge-diff/v6 from 6.4.0 to 6.4.1

[dependabot]

Bumps sigs.k8s.io/structured-merge-diff/v6 from 6.4.0 to 6.4.1.

Commits

• 281daba Merge pull request #332 from jpbetz/nullable-empty-container-preservation
• d28d362 Add nullable type support
• e570f92 Merge pull request #328 from lalitc375/fix-deserailezed-tests
• ba35bbd Address feedbacks
• 3001c6e Harden path element deserialization trailing data validation
• 3ce9bc1 Add edge-case tests for DeserializePathElement
• 2ad5e4f Merge pull request #326 from benluddy/unstructured-converter-with-error
• f772c7a Add value.UnstructuredConverter sibling interface that can fail.
• 54d6a56 Adopt PointerTo (1.18) and TypeFor (1.22) in reflect cache.
• 901ea08 Merge pull request #327 from jpbetz/unicode-tests
• Additional commits viewable in compare view

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[google-oss-prow]

Hi @dependabot[bot]. Thanks for your PR.

I'm waiting for a GoogleContainerTools member to verify that this patch is reasonable to test. If it is, they should reply with /ok-to-test on its own line. Until that is done, I will not automatically test new commits in this PR, but the usual testing commands by org members will still work. Regular contributors should join the org to skip this step.

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[Camila-B]

/ok-to-test

[dependabot]

Superseded by #2219.