Update CBOR references and half-float assertion bounds

[Patrick10199]

Summary

• Correct the CBOR half-precision exponent and mantissa assertion bounds.
• Update CBOR documentation, comments, and test naming from RFC 7049 to RFC 8949.
• Regenerate the amalgamated header.

Rationale

The decoder masks the exponent with 0x1F and the mantissa with 0x3FF, so their maximum values are 31 and 1023. The previous bounds of 32 and 1024 could never be reached.

RFC 8949 obsoletes RFC 7049. The existing Appendix D, Figure 3 citation remains valid in RFC 8949. This change corrects debug invariants and stale references without changing CBOR encoding or decoding behavior.

Testing

• cmake --build build --parallel
• test-cbor_cpp11 passed.
• Full local CTest run: 106/109 passed. The three remaining MinGW floating-point parsing failures reproduced unchanged on the unmodified base commit 2e2368709.
• Formatted with Artistic Style 3.4.13 and regenerated single_include/nlohmann/json.hpp.

Closes #5319

[nlohmann]

Looks good to me.

[nlohmann]

Thanks!

[patrickarms]

Happy to help out! I'll keep poking around and see if there's anything else i can do.

/commented using the wrong account