Validate DVS contour sample counts

[FlorianPfaff]

Fixes validation for DVS contour sample counts and adds tests.

[github-actions]

✅MegaLinter analysis: Success

Descriptor	Linter	Files	Fixed	Errors	Warnings	Elapsed time
✅ COPYPASTE	jscpd	yes		no	no	76.35s
✅ JSON	prettier	7	0	0	0	0.85s
✅ JSON	v8r	7		0	0	6.68s
✅ MARKDOWN	markdownlint	68	0	0	0	2.06s
✅ MARKDOWN	markdown-table-formatter	68	0	0	0	1.03s
✅ PYTHON	black	1030	32	0	0	65.49s
✅ PYTHON	isort	1030	48	0	0	4.84s
✅ REPOSITORY	checkov	yes		no	no	50.53s
✅ REPOSITORY	gitleaks	yes		no	no	8.85s
✅ REPOSITORY	git_diff	yes		no	no	0.2s
✅ REPOSITORY	secretlint	yes		no	no	32.11s
✅ REPOSITORY	syft	yes		no	no	4.76s
✅ REPOSITORY	trivy-sbom	yes		no	no	12.17s
✅ REPOSITORY	trufflehog	yes		no	no	21.47s
✅ YAML	prettier	11	0	0	0	0.81s
✅ YAML	v8r	11		0	0	11.4s
✅ YAML	yamllint	11		0	0	0.49s

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