Fix issue when using email notifications with multiple recipients

🦙 MegaLinter status: ⚠️ WARNING

Descriptor	Linter	Files	Fixed	Errors	Elapsed time
✅ ACTION	actionlint	7		0	0.11s
✅ COPYPASTE	jscpd	yes		no	15.07s
✅ DOCKERFILE	hadolint	1		0	0.11s
✅ JSON	eslint-plugin-jsonc	11	0	0	1.94s
✅ JSON	npm-package-json-lint	yes		no	0.73s
✅ JSON	prettier	11	0	0	1.51s
✅ JSON	v8r	11		0	20.1s
⚠️ MARKDOWN	markdownlint	145	0	702	30.85s
✅ MARKDOWN	markdown-table-formatter	145	0	0	1.76s
✅ REPOSITORY	checkov	yes		no	18.95s
⚠️ REPOSITORY	gitleaks	yes		2	13.84s
⚠️ REPOSITORY	grype	yes		1	16.98s
✅ REPOSITORY	trivy	yes		no	10.93s
✅ REPOSITORY	trivy-sbom	yes		no	8.49s
✅ REPOSITORY	trufflehog	yes		no	11.62s
✅ SPELL	cspell	330		0	18.55s
✅ SPELL	lychee	170		0	4.52s
✅ TYPESCRIPT	eslint	146	0	0	8.32s
✅ TYPESCRIPT	prettier	146	0	0	10.31s
✅ XML	xmllint	2	0	0	0.1s
✅ YAML	prettier	12	0	0	1.64s
✅ YAML	v8r	12		0	18.98s
✅ YAML	yamllint	12		0	0.76s

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