feat: GoGitActionCache shallow fetch

[ChristopherHX]

• speed up cloning, should not have any negative impact

[github-actions]

🦙 MegaLinter status: ✅ SUCCESS

Descriptor	Linter	Files	Fixed	Errors	Elapsed time
✅ EDITORCONFIG	editorconfig-checker	1		0	0.01s
✅ REPOSITORY	gitleaks	yes		no	2.66s
✅ REPOSITORY	git_diff	yes		no	0.01s
✅ REPOSITORY	grype	yes		no	9.2s
✅ REPOSITORY	secretlint	yes		no	1.22s
✅ REPOSITORY	trivy-sbom	yes		no	0.38s
✅ REPOSITORY	trufflehog	yes		no	3.84s

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

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Files with missing lines	Coverage Δ
pkg/runner/action_cache.go	64.33% <100.00%> (ø)