Add stale workflow

[nvuillam]

No description provided.

[github-actions]

🦙 MegaLinter status: ⚠️ WARNING

Descriptor	Linter	Files	Fixed	Errors	Elapsed time
✅ ACTION	actionlint	6		0	0.05s
✅ JSON	eslint-plugin-jsonc	18	0	0	1.87s
✅ JSON	jsonlint	18		0	0.21s
✅ JSON	npm-package-json-lint	yes		no	0.6s
✅ JSON	prettier	18	4	0	1.2s
✅ JSON	v8r	18		0	21.96s
✅ MARKDOWN	markdownlint	4	0	0	1.85s
✅ MARKDOWN	markdown-link-check	4		0	25.22s
✅ MARKDOWN	markdown-table-formatter	4	2	0	0.29s
✅ REPOSITORY	checkov	yes		no	10.81s
✅ REPOSITORY	gitleaks	yes		no	1.89s
✅ REPOSITORY	git_diff	yes		no	0.03s
✅ REPOSITORY	grype	yes		no	10.49s
⚠️ REPOSITORY	kics	yes		1	4.08s
✅ REPOSITORY	secretlint	yes		no	0.92s
✅ REPOSITORY	trivy	yes		no	3.77s
✅ REPOSITORY	trivy-sbom	yes		no	1.41s
⚠️ REPOSITORY	trufflehog	yes		1	3.76s
✅ SPELL	cspell	36		0	3.79s
✅ SPELL	lychee	31		0	1.83s
✅ YAML	prettier	9	1	0	0.88s
✅ YAML	v8r	9		0	10.24s
✅ YAML	yamllint	9		0	0.48s

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