fix is_windows (actions#172)

added Scripts to PATH on Windows (actions#173)

Co-authored-by: Nikita Bykov <v-nibyko@microsoft.com>

Update v1 tag with latest v1.2.3 changes

Adding support for more PyPy versions and installing them on-flight (a…

…ctions#168)

* add support to install pypy

* resolved comments, update readme, add e2e tests.

* resolve throw error

* Add pypy unit tests to cover code

* add tests

* Update test-pypy.yml

* Update test-python.yml

* Update test-python.yml

* Update README.md

* fixing tests

* change order

Co-authored-by: Maxim Lobanov <v-malob@microsoft.com>

* add pypy tests and fix issue with pypy-3-nightly

Co-authored-by: Maxim Lobanov <v-malob@microsoft.com>

update dist file (actions#166)

Update README.md (actions#145)

Add Environment Files (actions#138)

Update @actions/core (actions#142)

fix: small typo in the docs (actions#127)