Fix with gcc-14 -std=c++14

[grisumbras]

No description provided.

[cppalliance-bot]

An automated preview of the documentation is available at https://1034.jsondocs.prtest.cppalliance.org/libs/json/doc/html/index.html

[cppalliance-bot]

Benchmark test results. More info at https://benchmark.cppalliance.org/jsonbenchmarks-pullrequests/1034/pullrequest.html

[cppalliance-bot]

An automated preview of the documentation is available at https://1034.jsondocs.prtest.cppalliance.org/libs/json/doc/html/index.html

[cppalliance-bot]

Benchmark test results. More info at https://benchmark.cppalliance.org/jsonbenchmarks-pullrequests/1034/pullrequest.html

[cppalliance-bot]

An automated preview of the documentation is available at https://1034.jsondocs.prtest.cppalliance.org/libs/json/doc/html/index.html

[cppalliance-bot]

Benchmark test results. More info at https://benchmark.cppalliance.org/jsonbenchmarks-pullrequests/1034/pullrequest.html

[cppalliance-bot]

An automated preview of the documentation is available at https://1034.jsondocs.prtest.cppalliance.org/libs/json/doc/html/index.html

[cppalliance-bot]

Benchmark test results. More info at https://benchmark.cppalliance.org/jsonbenchmarks-pullrequests/1034/pullrequest.html

[cppalliance-bot]

An automated preview of the documentation is available at https://1034.jsondocs.prtest.cppalliance.org/libs/json/doc/html/index.html

[cppalliance-bot]

Benchmark test results. More info at https://benchmark.cppalliance.org/jsonbenchmarks-pullrequests/1034/pullrequest.html

[cppalliance-bot]

An automated preview of the documentation is available at https://1034.jsondocs.prtest.cppalliance.org/libs/json/doc/html/index.html

[cppalliance-bot]

Benchmark test results. More info at https://benchmark.cppalliance.org/jsonbenchmarks-pullrequests/1034/pullrequest.html

[cppalliance-bot]

An automated preview of the documentation is available at https://1034.jsondocs.prtest.cppalliance.org/libs/json/doc/html/index.html

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 93.40%. Comparing base (6e3ae77) to head (9e6d3de).
Report is 4 commits behind head on develop.

Additional details and impacted files

@@           Coverage Diff            @@
##           develop    #1034   +/-   ##
========================================
  Coverage    93.40%   93.40%           
========================================
  Files           87       87           
  Lines         8622     8622           
========================================
  Hits          8053     8053           
  Misses         569      569           

Files with missing lines	Coverage Δ
include/boost/json/detail/value_to.hpp	100.00% <ø> (ø)
include/boost/json/value_ref.hpp	100.00% <ø> (ø)

---

Continue to review full report in Codecov by Sentry.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update 6e3ae77...9e6d3de. Read the comment docs.

[cppalliance-bot]

Benchmark test results. More info at https://benchmark.cppalliance.org/jsonbenchmarks-pullrequests/1034/pullrequest.html