Bump github.com/fxamacker/cbor/v2 from 2.9.0 to 2.9.4

[dependabot]

Bumps github.com/fxamacker/cbor/v2 from 2.9.0 to 2.9.4.

Release notes

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

v2.9.4

This release fixes potential panics when decoding a CBOR map whose key decodes to an uncomparable Go value under certain conditions.

Not affected: user apps that don't register tag types and don't use map key types that are either named empty interfaces (e.g. type MyAny any) or contain interfaces.

These potential panics can be encountered when one of these two conditions is met:

• user application registers a tag type (via TagSet interface) that is an array or struct with uncomparable or interface{} element or field type, or
• user application specifies a destination Go map whose key type is a named empty interface type or a type containing an interface.

This was identified while improving tests and reviewing code for an upcoming release.

Tests and fuzz tests were extended to cover this bug.

Upgrading to v2.9.4 is recommended.

What's Changed

• Fix panic decoding uncomparable map keys under certain conditions by @​fxamacker in fxamacker/cbor#817

Full Changelog: fxamacker/cbor@v2.9.3...v2.9.4

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

... (truncated)

Commits

• be0da0d Merge pull request #817 from fxamacker/fxamacker/release-2.9-fix-hashable-map...
• cd9c45c Fix panic decoding uncomparable map key into non any key type
• 259f9bb Fix panic decoding uncomparable registered tag value as map key
• 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...
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