Bump nltk from 3.4.5 to 3.9 in /tools #637

	name: Run Tests

	on:
	pull_request:
	branches: [ main ]

	jobs:
	build:
	runs-on: ubuntu-latest
	steps:
	# Checks the branch out under $GITHUB_WORKSPACE, so run_tests can access it
	# `git push` would fail on `fatal: You are not currently on a branch` if `ref` was
	# not specified here.
	# Inspired by: https://peterevans.dev/posts/github-actions-how-to-automate-code-formatting-in-pull-requests/
	- uses: actions/checkout@v2
	with:
	ref: ${{ github.head_ref }}
	token: ${{ secrets.UBERSHMEKEL_ALT_TOKEN }}

	- name: Set up Python 3.7
	uses: actions/setup-python@v2
	with:
	# Semantic version range syntax or exact version of a Python version
	python-version: '3.7'

	- name: Install dependencies
	run: \|
	python -m pip install --upgrade pip
	pip install -r tools/requirements.txt
	python -c "import nltk; nltk.download('wordnet')"

	- name: Run unit tests with pytest
	run: \|
	pytest tools/.

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