deps: bump github.com/fxamacker/cbor/v2 from 2.9.1 to 2.9.3

[dependabot]

Bumps github.com/fxamacker/cbor/v2 from 2.9.1 to 2.9.3.

Release notes

Sourced from github.com/fxamacker/cbor/v2's releases.

v2.9.3

This release fixes a potential panic when decoding into a time.Time from a CBOR byte string, map, or array under certain conditions.

Not affected: standard CBOR time data (RFC 8949 tag 0 or tag 1), and decoders configured with timeTag = DecTagRequired.

Upgrading to v2.9.3 is recommended.

The panic stack trace was publicly reported on 2026-08-17, and the fix was released the same day. Fuzz testing was extended to cover this class of bug, and fuzzing of v2.9.3 is ongoing.

What's Changed

• Skip data item when decoding to time.Time fails under certain conditions by @​fxamacker in fxamacker/cbor#803

Full Changelog: fxamacker/cbor@v2.9.2...v2.9.3

v2.9.2

This release refactors and hardens the streaming encoder by adding stricter checks for encoding CBOR indefinite-length data. Other changes include minor bugfixes, defensive checks, and more tests.

Projects that don't use CBOR indefinite-length data may also want to upgrade (summary of prior releases).

The stricter checks in the encoder prevent improper use of the library and bad inputs from producing malformed CBOR indefinite-length data that would be rejected by the decoder.

This release passed fuzz tests (billions of execs) and it is production quality.

What's Changed

• Reject encoding indefinite-length map with odd item count by @​fxamacker in fxamacker/cbor#764
• Reject encoding indefinite-length data item as a chunk inside indefinite-length byte string or text string by @​fxamacker in fxamacker/cbor#765
• Make TagSet.Remove a no-op when contentType is nil by @​fxamacker in fxamacker/cbor#766
• Refactor indefinite-length encoding and improve chunk validation during encoding by @​fxamacker in fxamacker/cbor#767
• Add more tests, fix a nit in unreachable panic message, update docs & ci by @​fxamacker in fxamacker/cbor#768

CI / GitHub Actions and Docs

• Bump actions/setup-go from 6.3.0 to 6.4.0 by @​dependabot[bot] in fxamacker/cbor#760
• Bump github/codeql-action from 4.34.1 to 4.35.1 by @​dependabot[bot] in fxamacker/cbor#761
• Bump github/codeql-action from 4.35.1 to 4.35.2 by @​dependabot[bot] in fxamacker/cbor#763
• Update README for v2.9.2 release by @​fxamacker in fxamacker/cbor#769

Full Changelog: fxamacker/cbor@v2.9.1...v2.9.2

Commits

• f0c90b6 Merge pull request #803 from fxamacker/fxamacker/fix-unmarshal-to-time
• c20692a Skip data item when decoding to time.Time fails
• 45589ab Merge pull request #769 from fxamacker/fxamacker/update-readme-release-status
• 8e98ea5 Update README for v2.9.2 release
• e501aca Merge pull request #768 from fxamacker/fxamacker/update-docs
• e6af0aa Merge pull request #767 from fxamacker/fxamacker/refactor-indefinite-length-e...
• 57f1601 Merge pull request #766 from fxamacker/fxamacker/no-opt-to-remove-nil-type-in...
• 0cdb674 Fix indefinite-length string chunk validation
• c0db60f Improve GitHub Workflow code coverage regex
• 63937fe Fix panic message to print the unrecognized tag
• Additional commits viewable in compare view

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