test: adds kover to github actions

[amagyar-iohk]

No description provided.

[atala-dev]

🦙 MegaLinter status: ⚠️ WARNING

Descriptor	Linter	Files	Fixed	Errors	Elapsed time
✅ ACTION	actionlint	1		0	0.14s
✅ EDITORCONFIG	editorconfig-checker	2		0	0.02s
✅ KOTLIN	ktlint	1		0	5.08s
⚠️ REPOSITORY	devskim	yes		6	0.99s
✅ REPOSITORY	dustilock	yes		no	0.08s
✅ REPOSITORY	gitleaks	yes		no	1.35s
✅ REPOSITORY	git_diff	yes		no	0.03s
✅ REPOSITORY	secretlint	yes		no	4.21s
✅ REPOSITORY	syft	yes		no	0.34s
✅ REPOSITORY	trivy	yes		no	6.13s
✅ YAML	prettier	1		0	0.47s
✅ YAML	v8r	1		0	3.52s
✅ YAML	yamllint	1		0	1.44s

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[atala-dev]

Code Coverage

Total Project Coverage	90.70%	✅