Update README.md

[timgentry]

What?

I've added a row to the plugin list for the Audit GitHub gem.

Why?

It is useful to keep the list up-to-date.

How?

I edited it on GitHub and created this PR.

Testing?

The preview looks fine and the link works.

Anything Else?

No

[github-actions]

🦙 MegaLinter status: ❌ ERROR

Descriptor	Linter	Files	Fixed	Errors	Elapsed time
✅ ACTION	actionlint	3		0	0.01s
✅ BASH	bash-exec	1		0	0.0s
✅ BASH	shellcheck	1		0	0.01s
✅ BASH	shfmt	1		0	0.0s
❌ COPYPASTE	jscpd	yes		1	1.26s
✅ JSON	jsonlint	2		0	0.13s
✅ JSON	v8r	2		0	3.62s
⚠️ MARKDOWN	markdownlint	10		7	0.59s
❌ MARKDOWN	markdown-link-check	10		3	9.64s
⚠️ MARKDOWN	markdown-table-formatter	10		1	0.23s
✅ REPOSITORY	checkov	yes		no	16.73s
❌ REPOSITORY	devskim	yes		1	0.01s
✅ REPOSITORY	dustilock	yes		no	0.01s
✅ REPOSITORY	gitleaks	yes		no	0.59s
✅ REPOSITORY	git_diff	yes		no	0.03s
✅ REPOSITORY	grype	yes		no	11.93s
❌ REPOSITORY	kics	yes		2	1.11s
✅ REPOSITORY	secretlint	yes		no	0.94s
✅ REPOSITORY	syft	yes		no	2.58s
✅ REPOSITORY	trivy	yes		no	4.86s
✅ REPOSITORY	trivy-sbom	yes		no	0.11s
✅ REPOSITORY	trufflehog	yes		no	3.23s
❌ SPELL	lychee	19		5	2.04s
✅ YAML	v8r	6		0	4.67s
✅ YAML	yamllint	6		0	1.51s

See detailed report in MegaLinter reports

You could have the same capabilities but better runtime performances if you use a MegaLinter flavor:

• oxsecurity/megalinter/flavors/terraform@v8.4.0 (53 linters)
• oxsecurity/megalinter/flavors/cupcake@v8.4.0 (85 linters)