Truncate Grafana loki log size to 500 items if log body is too long

[github-actions[bot]]

🦙 MegaLinter status: ⚠️ WARNING

Descriptor	Linter	Files	Fixed	Errors	Elapsed time
✅ ACTION	actionlint	7		0	0.15s
✅ COPYPASTE	jscpd	yes		no	16.63s
✅ DOCKERFILE	hadolint	1		0	0.14s
✅ JSON	npm-package-json-lint	yes		no	0.61s
✅ JSON	prettier	21	0	0	2.12s
✅ JSON	v8r	21		0	24.51s
⚠️ MARKDOWN	markdownlint	148	0	1646	96.3s
✅ MARKDOWN	markdown-table-formatter	148	0	0	0.68s
✅ REPOSITORY	checkov	yes		no	18.78s
⚠️ REPOSITORY	gitleaks	yes		10	15.23s
⚠️ REPOSITORY	grype	yes		1	13.43s
✅ REPOSITORY	trivy	yes		no	8.75s
✅ REPOSITORY	trivy-sbom	yes		no	7.31s
✅ REPOSITORY	trufflehog	yes		no	6.32s
✅ SPELL	cspell	350		0	26.23s
✅ SPELL	lychee	183		0	3.9s
✅ TYPESCRIPT	eslint	151	0	0	8.28s
✅ TYPESCRIPT	prettier	151	1	0	9.38s
✅ XML	xmllint	4	0	0	0.18s
✅ YAML	prettier	12	0	0	1.54s
✅ YAML	v8r	12		0	25.59s
✅ YAML	yamllint	12		0	0.98s

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