Missing typing-extensions baseline in dependencies

[xrmx]

This is failing with typing-extensions==4.5.0, Buffer has been added in 4.6.0 according to https://github.com/python/typing_extensions/blob/main/CHANGELOG.md#release-460-may-22-2023

    from mocket.mocket import Mocket
.tox/py310-test-opentelemetry-exporter-http-transport-oldest/lib/python3.10/site-packages/mocket/mocket.py:12: in <module>
    from mocket.recording import MocketRecordStorage
.tox/py310-test-opentelemetry-exporter-http-transport-oldest/lib/python3.10/site-packages/mocket/recording.py:14: in <module>
    from mocket.types import Address
.tox/py310-test-opentelemetry-exporter-http-transport-oldest/lib/python3.10/site-packages/mocket/types.py:7: in <module>
    from typing_extensions import Buffer, TypeAlias
E   ImportError: cannot import name 'Buffer' from 'typing_extensions' (/home/runner/work/opentelemetry-python/opentelemetry-python/.tox/py310-test-opentelemetry-exporter-http-transport-oldest/lib/python3.10/site-packages/typing_extensions.py)

[mindflayer]

Do you need a new release with the right version pinned? I already have the fix in place.