Perform CI checks for auto-generated semantic conventions

[joaopgrassi]

Component

OpenTelemetry.SemanticConventions

Is your feature request related to a problem?

During #2040 we identified that it would be great if we had CI checks that guaranteed:

• That the versions in generate.ps1 and generated.sh` match
• That no manual changes are made to the auto-generated semconv files

What is the expected behavior?

Discrepancies in the generate scripts AND manual changes on semconv files should be caught during CI checks.

Which alternative solutions or features have you considered?

Adding CI checks.

Additional context

See context in this thread: #2040 (comment)