Add build step to megalinter to catch certain errors that it misreports

[iggy]

Extra test to help fix:
level=error msg="Running error: context loading failed: no go files to analyze"

[github-actions]

🦙 MegaLinter status: ⚠️ WARNING

Descriptor	Linter	Files	Fixed	Errors	Elapsed time
✅ ACTION	actionlint	4		0	0.07s
✅ COPYPASTE	jscpd	yes		no	1.8s
✅ DOCKERFILE	hadolint	1		0	0.19s
✅ GO	golangci-lint	yes	yes	no	42.38s
✅ GO	revive	yes		no	0.02s
✅ MARKDOWN	markdownlint	2	0	0	0.8s
✅ MARKDOWN	markdown-link-check	2		0	0.56s
✅ MARKDOWN	markdown-table-formatter	2	0	0	0.35s
✅ OPENAPI	spectral	2		0	4.8s
✅ REPOSITORY	checkov	yes		no	23.57s
✅ REPOSITORY	gitleaks	yes		no	0.19s
✅ REPOSITORY	git_diff	yes		no	0.0s
✅ REPOSITORY	grype	yes		no	23.05s
✅ REPOSITORY	secretlint	yes		no	1.26s
✅ REPOSITORY	trivy	yes		no	19.53s
✅ REPOSITORY	trivy-sbom	yes		no	6.82s
✅ REPOSITORY	trufflehog	yes		no	9.87s
⚠️ SPELL	lychee	12		3	0.39s
✅ YAML	prettier	10	0	0	1.06s
✅ YAML	v8r	10		0	8.03s
✅ YAML	yamllint	10		0	0.63s

See detailed report in MegaLinter reports

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