chore(deps): update actions/checkout action to v6

[renovate]

This PR contains the following updates:

Package	Type	Update	Change
actions/checkout	action	major	v5 -> v6

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Release Notes

actions/checkout (actions/checkout)

v6

Compare Source

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Configuration

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[github-actions]

🦙 MegaLinter status: ✅ SUCCESS

Descriptor	Linter	Files	Fixed	Errors	Warnings	Elapsed time
✅ ACTION	actionlint	1		0	0	0.01s
✅ BASH	bash-exec	9		0	0	0.02s
✅ BASH	shellcheck	9		0	0	0.04s
✅ BASH	shfmt	9		0	0	0.0s
✅ COPYPASTE	jscpd	yes		no	no	1.07s
✅ JSON	jsonlint	13		0	0	0.09s
✅ JSON	prettier	10		0	0	0.48s
✅ JSON	v8r	13		0	0	4.22s
✅ MARKDOWN	markdownlint	46		0	0	1.01s
✅ MARKDOWN	markdown-link-check	46		0	0	18.45s
✅ MARKDOWN	markdown-table-formatter	46		0	0	0.24s
✅ REPOSITORY	gitleaks	yes		no	no	0.36s
✅ REPOSITORY	git_diff	yes		no	no	0.01s
✅ REPOSITORY	grype	yes		no	no	32.21s
✅ REPOSITORY	secretlint	yes		no	no	0.95s
✅ REPOSITORY	syft	yes		no	no	1.86s
✅ REPOSITORY	trivy-sbom	yes		no	no	0.12s
✅ REPOSITORY	trufflehog	yes		no	no	4.07s
✅ SPELL	cspell	95		0	0	3.0s
✅ YAML	prettier	24		0	0	0.63s
✅ YAML	v8r	23		0	0	2.72s
✅ YAML	yamllint	25		0	0	0.52s

See detailed report in MegaLinter reports