Description:

using python-version: 3.9-dev installs 3.10.4

Run ./
  with:
    python-version: 3.9-dev
    token: ***
  env:
    pythonLocation: /opt/hostedtoolcache/Python/3.7.13/x64
    PKG_CONFIG_PATH: /opt/hostedtoolcache/Python/3.7.13/x64/lib/pkgconfig
    LD_LIBRARY_PATH: /opt/hostedtoolcache/Python/3.7.13/x64/lib
Successfully set up CPython (3.10.4)

Action version:
v3, main

Platform:

• Ubuntu
• macOS
• Windows

Runner type:

• Hosted
• Self-hosted

Tools version:
3.9-dev

Repro steps:
c.f description

Expected behavior:
Set up the most recent CPython 3.9 version available including pre-releases i.e. in node-semver, ~3.9.0-0, {includePrerelease: true}

Actual behavior:
Set up CPython 3.10.4