[SEMANTIC CONVENTIONS] Upgrade to semantic conventions 1.38.0

[marcalff]

Fixes # (issue)

Changes

Please provide a brief description of the changes here.

• Upgrade to semantic conventions 1.38.0
• Upgrade to weaver 1.18.0

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

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 90.01%. Comparing base (098c5f9) to head (55f2b21).
⚠️ Report is 1 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #3729   +/-   ##
=======================================
  Coverage   90.01%   90.01%           
=======================================
  Files         225      225           
  Lines        7105     7105           
=======================================
  Hits         6395     6395           
  Misses        710      710           

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