Update requirements.txt, numpy < 2.0 #113

	name: Regression Tests
	on: [push, pull_request]
	jobs:
	regression-tests:
	strategy:
	matrix:
	mpi: [mpich-3.4, openmpi-4.1.1, openmpi-3.1.6]
	python-version: [3.7, 3.8, 3.9]
	runs-on: ubuntu-latest
	steps:
	- uses: actions/checkout@v2
	- name: Set up Python ${{ matrix.python-version }}
	uses: actions/setup-python@v2
	with:
	python-version: ${{ matrix.python-version }}
	- name: Maybe use cached MPI
	id: cache-mpi
	uses: actions/cache@v2
	with:
	path: ~/mpi
	# NOTE: without the `-v2' an empty cache dir will be used because the initial caching
	# of ~/mpi was incorrect. caches cannot be cleared:
	# https://github.com/actions/cache/issues/2
	key: ${{ runner.os }}-${{ matrix.mpi }}-v2
	- name: Maybe build ${{ matrix.MPI }}
	if: steps.cache-mpi.outputs.cache-hit != 'true'
	run: bash ./.github/scripts/install-mpi.sh ${{ matrix.MPI }} ~/mpi
	- name: Add mpi to path
	run: echo "PATH=$HOME/mpi/bin:$PATH" >> $GITHUB_ENV
	- name: Install Python Requirements
	run: \|
	python -m pip install --upgrade pip
	pip install -r requirements.txt
	- name: Install Pyranda
	run: \|
	python setup.py build
	python setup.py install
	- name: Run Regression Tests
	run: cd tests && python run_tests.py 1

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