Fix _RasrFsaBuilderFbw2: use correct dtype and ensure multi-iterability #680

	name: model_tests
	on:
	push:
	branches:
	- main
	pull_request:
	branches:
	- main
	jobs:
	test-jobs:
	runs-on: ubuntu-latest
	steps:
	- uses: actions/checkout@v4
	with:
	repository: "rwth-i6/i6_models"
	path: ""
	- uses: actions/setup-python@v4
	with:
	python-version: 3.8
	cache: 'pip'
	- run: \|
	pip install --upgrade pip setuptools wheel
	pip install pytest
	# ESPnet needs Numpy 1.
	# Older Numpy 1 requires those older versions. (https://github.com/rwth-i6/i6_models/issues/78)
	pip install numpy==1.23.5
	pip install ctc-segmentation==1.6.6 pyworld==0.3.4
	pip install -r requirements.txt
	pip install -r requirements_dev.txt
	- name: Test Models
	run: \|
	python -m pytest tests

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