feat(website): remove copyright, identify public domain work instead

[aj-stein]

No description provided.

[github-actions]

🦙 MegaLinter status: ⚠️ WARNING

Descriptor	Linter	Files	Fixed	Errors	Warnings	Elapsed time
✅ REPOSITORY	gitleaks	yes		no	no	0.07s
✅ REPOSITORY	grype	yes		no	no	21.74s
✅ REPOSITORY	kics	yes		no	no	2.2s
✅ REPOSITORY	secretlint	yes		no	no	0.9s
✅ REPOSITORY	semgrep	yes		no	no	17.5s
✅ REPOSITORY	syft	yes		no	no	1.71s
✅ REPOSITORY	trivy	yes		no	no	7.05s
✅ REPOSITORY	trivy-sbom	yes		no	no	0.16s
✅ REPOSITORY	trufflehog	yes		no	no	6.03s

See detailed report in MegaLinter reports
Set VALIDATE_ALL_CODEBASE: true in mega-linter.yml to validate all sources, not only the diff