fix: parse error serialisation

[stevenh]

Convert parse errors into strings manually to avoid JSON serialisation failure due to circular references.

Fixes #406

[github-actions]

🦙 MegaLinter status: ✅ SUCCESS

Descriptor	Linter	Files	Fixed	Errors	Elapsed time
✅ DOCKERFILE	hadolint	1		0	0.05s
✅ GROOVY	npm-groovy-lint	10	3	0	19.2s
✅ JAVASCRIPT	prettier	98	98	0	3.82s
✅ JSON	jsonlint	8		0	0.17s
✅ JSON	npm-package-json-lint	yes		no	0.51s
✅ JSON	prettier	8	3	0	0.83s
✅ JSON	v8r	8		0	18.45s
✅ MARKDOWN	markdownlint	7	2	0	3.53s
✅ MARKDOWN	markdown-table-formatter	7	5	0	0.75s
✅ REPOSITORY	checkov	yes		no	16.99s
✅ REPOSITORY	gitleaks	yes		no	5.26s
✅ REPOSITORY	git_diff	yes		no	0.15s
✅ REPOSITORY	grype	yes		no	17.72s
✅ REPOSITORY	secretlint	yes		no	1.84s
✅ REPOSITORY	trivy	yes		no	9.36s
✅ REPOSITORY	trivy-sbom	yes		no	1.18s
✅ REPOSITORY	trufflehog	yes		no	8.3s
✅ SPELL	cspell	129		0	5.57s
✅ SPELL	lychee	18		0	2.76s
✅ XML	xmllint	1	0	0	0.12s
✅ YAML	prettier	3	0	0	0.55s
✅ YAML	v8r	3		0	7.58s
✅ YAML	yamllint	3		0	0.26s

See detailed report in MegaLinter reports

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[stevenh]

Looks like this causes issues with tests, so needs more work

[nvuillam]

@stevenh I don't know what happens with codecov token (I generated a new one, but same strange result) , i'm ok to disable this part of the workflow :)

[echoix]

The step is also set with dry run true, so it won't upload anyways.

[echoix]

It seems that there are at least some users that works and fails randomly : codecov/codecov-action#1548

[stevenh]

As those failures not connected with PR will look to merge once your review is in @nvuillam.