Migrate to yaml org v4

[ChristopherHX]

go mod why gopkg.in/yaml.v3
# gopkg.in/yaml.v3
github.com/actions-oss/act-cli/cmd
github.com/spf13/cobra/doc
gopkg.in/yaml.v3

Our version of cobra cli still references the legacy package

[github-actions]

✅MegaLinter analysis: Success

Descriptor	Linter	Files	Fixed	Errors	Warnings	Elapsed time
✅ EDITORCONFIG	editorconfig-checker	25		0	0	0.2s
✅ REPOSITORY	gitleaks	yes		no	no	2.32s
✅ REPOSITORY	git_diff	yes		no	no	0.01s
✅ REPOSITORY	grype	yes		no	no	27.41s
✅ REPOSITORY	secretlint	yes		no	no	1.4s
✅ REPOSITORY	syft	yes		no	no	2.33s
✅ REPOSITORY	trivy-sbom	yes		no	no	4.26s
✅ REPOSITORY	trufflehog	yes		no	no	4.8s

See detailed reports in MegaLinter artifacts
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
cmd/root.go	62.94% <ø> (+5.37%)	⬆️
internal/model/anchors.go	35.71% <ø> (ø)
internal/model/strategy_utils.go	69.16% <ø> (ø)
internal/model/token_utils.go	7.89% <ø> (ø)
internal/model/workflow_state.go	11.57% <ø> (ø)
internal/templateeval/evaluate.go	67.47% <ø> (ø)
pkg/model/action.go	79.48% <ø> (+20.95%)	⬆️
pkg/model/anchors.go	100.00% <ø> (ø)
pkg/model/workflow.go	74.53% <ø> (+2.15%)	⬆️
pkg/runner/expression.go	78.88% <ø> (+0.17%)	⬆️
... and 1 more

... and 63 files with indirect coverage changes

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