Set flavors-stats.json as a generated file in .gitattributes

[echoix]

The flavors-stats.json was entered as flavor-stats.json, I don’t know why there was a typo there.
Black generated exclusion is removed as it isn't needed anymore

Proposed Changes

1. …
2. …
3. …

Readiness Checklist

Author/Contributor

• Add entry to the CHANGELOG listing the change and linking to the corresponding issue (if appropriate)
• If documentation is needed for this change, has that been included in this pull request

Reviewing Maintainer

• Label as breaking if this is a large fundamental change
• Label as either automation, bug, documentation, enhancement, infrastructure, or performance

[github-actions]

🦙 MegaLinter status: ⚠️ WARNING

Descriptor	Linter	Files	Fixed	Errors	Elapsed time
✅ BASH	bash-exec	5		0	0.04s
✅ BASH	shellcheck	5		0	0.12s
✅ BASH	shfmt	5	0	0	0.38s
✅ COPYPASTE	jscpd	yes		no	4.74s
✅ DOCKERFILE	hadolint	123		0	23.14s
✅ JSON	eslint-plugin-jsonc	23	0	0	2.85s
✅ JSON	jsonlint	21		0	0.3s
✅ JSON	v8r	23		0	17.69s
✅ MAKEFILE	checkmake	1		0	0.01s
⚠️ MARKDOWN	markdownlint	255	0	11	7.36s
✅ MARKDOWN	markdown-link-check	255		0	6.78s
✅ MARKDOWN	markdown-table-formatter	255	0	0	38.15s
✅ OPENAPI	spectral	1		0	2.19s
⚠️ PYTHON	bandit	200		61	3.11s
✅ PYTHON	black	200	0	0	6.25s
✅ PYTHON	flake8	200		0	2.56s
✅ PYTHON	isort	200	0	0	0.95s
✅ PYTHON	mypy	200		0	15.06s
✅ PYTHON	pylint	200		0	16.98s
⚠️ PYTHON	pyright	200		352	28.84s
✅ PYTHON	ruff	200	0	0	0.43s
✅ REPOSITORY	checkov	yes		no	45.05s
✅ REPOSITORY	git_diff	yes		no	0.5s
⚠️ REPOSITORY	grype	yes		1	11.97s
✅ REPOSITORY	secretlint	yes		no	10.31s
✅ REPOSITORY	trivy	yes		no	31.84s
✅ REPOSITORY	trivy-sbom	yes		no	2.69s
⚠️ REPOSITORY	trufflehog	yes		1	30.45s
✅ SPELL	cspell	665		0	36.39s
✅ SPELL	lychee	335		0	4.65s
✅ XML	xmllint	3	0	0	0.37s
✅ YAML	prettier	160	0	0	6.34s
✅ YAML	v8r	102		0	206.76s
✅ YAML	yamllint	161		0	2.14s

See detailed report in MegaLinter reports

MegaLinter is graciously provided by

[nvuillam]

Good move, thanks @echoix :)