update oldest deps

Author: lmolkova

instrumentation-genai/opentelemetry-instrumentation-openai-v2/tests/requirements.oldest.txt

@@ -32,6 +32,6 @@ opentelemetry-exporter-otlp-proto-http~=1.30
 opentelemetry-api==1.40  # when updating, also update in pyproject.toml
 opentelemetry-sdk==1.40  # when updating, also update in pyproject.toml
 opentelemetry-semantic-conventions==0.61b0  # when updating, also update in pyproject.toml
-opentelemetry-util-genai==0.4b0  #  when updating, also update in pyproject.toml
 
+-e util/opentelemetry-util-genai
 -e instrumentation-genai/opentelemetry-instrumentation-openai-v2