Linting Github action is failing

[Niall O'Callaghan]

Describe the bug
Lint Github action is failing.

What did you EXPECT to happen?
Linting process to run successfully on Pull Request creation

What ACTUALLY happened?
Error from Lint action. Console output below.

Run find . -name '*.py' -print0 | xargs -0 pyupgrade --py36-plus
xargs: pyupgrade: No such file or directory
Error: Process completed with exit code 127.

What did you DO? (steps to reproduce)
Create a Pull Request

Can you provide other helpful information?
Github Action source may have been updated.