[SEMANTIC CONVENTIONS] Upgrade to semantic conventions 1.28.0

[marcalff]

Fixes #3088

Changes

Please provide a brief description of the changes here.

• Upgrade to semantic conventions 1.28.0

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

[netlify]

✅ Deploy Preview for opentelemetry-cpp-api-docs canceled.

Name	Link
🔨 Latest commit	95e2fb5
🔍 Latest deploy log	https://app.netlify.com/sites/opentelemetry-cpp-api-docs/deploys/673512be7429320008a2150c

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 87.85%. Comparing base (497eaf4) to head (95e2fb5).
Report is 163 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #3139      +/-   ##
==========================================
+ Coverage   87.12%   87.85%   +0.73%     
==========================================
  Files         200      195       -5     
  Lines        6109     6136      +27     
==========================================
+ Hits         5322     5390      +68     
+ Misses        787      746      -41     

see 113 files with indirect coverage changes