Description:
While working on #606 I discovered that PyPy's resolvedPyPyVersion contains a trailing newline, which causes the pythonVersion (passed to cacheDependencies) to look like 7.3.11\n-3.9.16.

Action version:
I'm running code against the main branch. The bug only exists on Ubuntu and macOS runners. The Windows runner does not have the trailing newline.

Platform:

• Ubuntu
• macOS
• Windows

Runner type:

• Hosted
• Self-hosted

Tools version:
PyPy 7.3.11 with Python 3.9.16

Repro steps:
You can see the issue in the output of the "Installed versions" output group. I've created a repo to demonstrate the issue with a simple workflow:

https://github.com/kurtmckee/demonstrate-pypy-newlines/actions/runs/4151696169/jobs/7182162044

Expected behavior:
I expect that the resolvedPyPyVersion variable will not have a trailing newline.

Actual behavior:
resolvedPyPyVersion has a trailing newline, and this can be seen in the "Installed versions" output group's text:

On Ubuntu and macOS:

  Successfully set up PyPy 7.3.11
   with Python (3.9.16)

On Windows:

  Successfully set up PyPy 7.3.11 with Python (3.9.16)