Fix rstcheck options & install

[nvuillam]

Fixes #2869

[github-actions]

🦙 MegaLinter status: ⚠️ WARNING

Descriptor	Linter	Files	Fixed	Errors	Elapsed time
✅ BASH	bash-exec	5		0	0.03s
✅ BASH	shellcheck	5		0	0.12s
✅ BASH	shfmt	5	0	0	0.02s
✅ COPYPASTE	jscpd	yes		no	4.68s
✅ DOCKERFILE	hadolint	123		0	20.19s
✅ JSON	eslint-plugin-jsonc	23	0	0	2.44s
✅ JSON	jsonlint	21		0	0.26s
✅ JSON	v8r	23		0	15.8s
✅ MAKEFILE	checkmake	1		0	0.0s
⚠️ MARKDOWN	markdownlint	255	0	254	32.87s
✅ MARKDOWN	markdown-link-check	255		0	6.67s
✅ MARKDOWN	markdown-table-formatter	255	0	0	33.95s
✅ OPENAPI	spectral	1		0	1.57s
⚠️ PYTHON	bandit	200		61	2.93s
✅ PYTHON	black	200	0	0	5.79s
✅ PYTHON	flake8	200		0	2.32s
✅ PYTHON	isort	200	0	0	0.53s
✅ PYTHON	mypy	200		0	12.67s
✅ PYTHON	pylint	200		0	15.26s
⚠️ PYTHON	pyright	200		342	24.21s
✅ PYTHON	ruff	200	0	0	0.12s
✅ REPOSITORY	checkov	yes		no	39.95s
✅ REPOSITORY	git_diff	yes		no	0.01s
⚠️ REPOSITORY	grype	yes		1	11.67s
✅ REPOSITORY	secretlint	yes		no	13.32s
✅ REPOSITORY	trivy	yes		no	28.18s
✅ REPOSITORY	trivy-sbom	yes		no	1.33s
✅ SPELL	cspell	665		0	28.66s
✅ SPELL	lychee	335		0	4.04s
✅ XML	xmllint	3	0	0	0.01s
✅ YAML	prettier	160	0	0	4.88s
✅ YAML	v8r	102		0	185.03s
✅ YAML	yamllint	161		0	1.84s

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