Upgrade opentelemetry-prometheus to 0.28

[BSteffaniak]

Changes

Upgrade the dependencies to the latest 0.28 version and fix breaking changes.

I noticed this issue regarding discontinuing the prometheus crate: #2451

If that is the plan, you may want to disregard this PR. Although, I am not sure what the proper way to transition from using the opentelemetry-prometheus crate to just simply using otlp natively would involve. Any pointers there would be much appreciated.

Merge requirement checklist

• CONTRIBUTING guidelines followed
• Unit tests added/updated (if applicable)
• Appropriate CHANGELOG.md files updated for non-trivial, user-facing changes
• Changes in public API reviewed (if applicable)

[linux-foundation-easycla]

The committers listed above are authorized under a signed CLA.

• ✅ login: BSteffaniak / name: Braden Steffaniak (02efe8e, c8b39bd)

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 79.0%. Comparing base (f3a375c) to head (02efe8e).

Additional details and impacted files

@@          Coverage Diff          @@
##            main   #2650   +/-   ##
=====================================
  Coverage   79.0%   79.0%           
=====================================
  Files        120     120           
  Lines      22512   22512           
=====================================
  Hits       17791   17791           
  Misses      4721    4721           

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.

[cijothomas]

Although, I am not sure what the proper way to transition from using the opentelemetry-prometheus crate to just simply using otlp natively would involve. Any pointers there would be much appreciated.

I'll make a doc on this shortly! (I have been busy with release, else would have published this earlier.)

Irrespective, discontinuing this complete needs more discussion among all maintainers (and probably spec too), so this PR can be still considered.

[lalitb]

LGTM. Good to have changelog for bumping the otel versions.

[BSteffaniak]

@lalitb:

Should I make additions to the root CHANGELOG.md as well as the opentelementry-prometheus/CHANGELOG.md?

(nevermind, noticed that there isnt a 'root' CHANGELOG.md)

[lalitb]

The package is published now - https://crates.io/crates/opentelemetry-prometheus/0.28.0