Umount the device first during mount_usb_storage() (#1587) (BugFix) #1589

	name: Check formatting with Black

	on:
	push:
	branches: [ main ]
	pull_request:
	branches: [ main ]
	workflow_dispatch:

	jobs:
	check-with-black:
	runs-on: ubuntu-latest
	steps:
	- uses: actions/checkout@v4
	- uses: psf/black@stable
	with:
	options: "--check --diff --line-length 79 --extend-exclude '/vendor/'"

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