Configure ryml to use exceptions when using CMAKE

[BugelNiels]

Fixes #3851

Changes

When building opentelemetry-cpp and ryml is fetched from the repo using CMake, ryml will use abort() when it encounters errors. This results in unintended crashes and prevents the calling application from gracefully dealing with these errors. This PR ensures that when we fetch ryml, we configure it to use exceptions instead.

For significant contributions please make sure you have completed the following items:

• CHANGELOG.md updated for non-trivial changes
• Unit tests have been added
• Changes in public API reviewed

[linux-foundation-easycla]

• ❌ - login: @BugelNiels / name: Niels Bugel . The commit (a7d0e4f) is not authorized under a signed CLA. Please click here to be authorized. For further assistance with EasyCLA, please submit a support request ticket.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 89.99%. Comparing base (bb5fff0) to head (a7d0e4f).
⚠️ Report is 1 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #3852   +/-   ##
=======================================
  Coverage   89.99%   89.99%           
=======================================
  Files         225      225           
  Lines        7168     7168           
=======================================
  Hits         6450     6450           
  Misses        718      718           

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