pex 2.1.155

[github-actions[bot]]

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2.1.155

This release brings support for --pip-version 23.3.2 along with
optimizations that reduce built PEX size for both --include-tools and
--venv PEXes (which includes the Pex PEX) as well as reduce PEX build
time for --pre-install-wheels PEXes (the default) and PEX cold first
boot time for --no-pre-install-wheels PEXes that use more than one
parallel install job.

• Add support for Pip 23.3.2. (Add support for Pip 23.3.2. #2307)
• Remove Pip.spawn_install_wheel & optimize. (Remove Pip.spawn_install_wheel & optimize. #2305)
• Since we no longer use wheel code, remove it. (Since we no longer use wheel code, remove it. #2302)

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This discussion was created from the release pex 2.1.155.