Update vertexai instrumentation to be in-line with the latest semantic conventions#3709

aabmass merged 23 commits intoopen-telemetry:mainopen-telemetry/opentelemetry-python-contrib:mainfrom

DylanRussell:vertexai_semconv_v2DylanRussell/opentelemetry-python-contrib:vertexai_semconv_v2Copy head branch name to clipboard