semconvgen: Quickfix after semconv repo migration

[pellared]

This is "quickfix" for semconvgen so that the OTel Collector and Go can use semconvgen after the semantic conventions moved from https://github.com/open-telemetry/opentelemetry-specification to https://github.com/open-telemetry/semantic-conventions.

This change was tested as part of open-telemetry/opentelemetry-go#4362

A more sophisticated way would be probably to have two args in semconvgen; one for the Git repository and second for folder when the YAML definitions reside. However, I think that it may be not worth the effort and could introduce more problems than benefits (both OTel Collector and Go would need to update their semconv generation scripts).

[codecov]

Codecov Report

Patch and project coverage have no change.

Comparison is base (37d80b2) 62.07% compared to head (a864199) 62.07%.

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #374   +/-   ##
=======================================
  Coverage   62.07%   62.07%           
=======================================
  Files          48       48           
  Lines        2344     2344           
=======================================
  Hits         1455     1455           
  Misses        741      741           
  Partials      148      148           

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