[Snyk] Upgrade handlebars from 4.7.7 to 4.7.8

[GabLeRoux]

Snyk has created this PR to upgrade handlebars from 4.7.7 to 4.7.8.

:information_source: Keep your dependencies up-to-date. This makes it easier to fix existing vulnerabilities and to more quickly identify and fix newly disclosed vulnerabilities when they affect your project.

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• The recommended version is 1 version ahead of your current version.

• The recommended version was released a year ago.

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[!IMPORTANT]

• Check the changes in this PR to ensure they won't cause issues with your project.
• This PR was automatically created by Snyk using the credentials of a real user.

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