[opentelemetry-cpp] update to 1.28.0

[Tom Tan (ThomsonTan)]

• Changes comply with the maintainer guide.
• SHA512s are updated for each updated download.
• The "supports" clause reflects platforms that may be fixed by this new version, or no changes were necessary.
• Any fixed CI baseline and CI feature baseline entries are removed from that file, or no entries needed to be changed.
• All patch files in the port are applied and succeed.
• The version database is fixed by rerunning ./vcpkg x-add-version --all and committing the result.
• Exactly one version is added in each modified versions file.

[Victor Romero (vicroms)]

Tom Tan (@ThomsonTan) please merge ThomsonTan#1 to fix some pkg-config usage issues

[Tom Tan (ThomsonTan)]

Tom Tan (@ThomsonTan) please merge ThomsonTan#1 to fix some pkg-config usage issues

Thanks, let me take a look.

[Tom Tan (ThomsonTan)]

Tom Tan (@ThomsonTan) please merge ThomsonTan#1 to fix some pkg-config usage issues

Victor Romero (@vicroms), the fix looks good and was appended to this PR, thanks.

BTW, how is the "pkg-config usage issues" exposed? Seems it is not part of the CI.

[Victor Romero (vicroms)]

Tom Tan (@ThomsonTan) please merge ThomsonTan#1 to fix some pkg-config usage issues

Victor Romero (@vicroms), the fix looks good and was appended to this PR, thanks.

BTW, how is the "pkg-config usage issues" exposed? Seems it is not part of the CI.

We are experimenting with having GPT create sample projects locally, these projects attempt to consume the packages using CMake, pkgconfig and direct include integrations and report any link issues.

It's not something we can do during our scheduled CI runs, as the build already takes 36 hours to complete for the whole registry. But some ports have a dedicated test port in scripts/test_ports.