[Snyk] Security upgrade astro from 5.10.1 to 5.15.9

[BekahHW]

Snyk has created this PR to fix 7 vulnerabilities in the npm dependencies of this project.

Snyk changed the following file(s):

• package.json
• package-lock.json

Vulnerabilities that will be fixed with an upgrade:

	Issue	Score
	Server-side Request Forgery (SSRF) SNYK-JS-ASTRO-13961342	738
	Directory Traversal SNYK-JS-ASTRO-14059661	738
	Cross-site Scripting (XSS) SNYK-JS-ASTRO-14059122	708
	Relative Path Traversal SNYK-JS-ASTRO-14059139	648
	Relative Path Traversal SNYK-JS-ASTROJSINTERNALHELPERS-14059142	648
	Cross-site Scripting (XSS) SNYK-JS-ASTROJSINTERNALHELPERS-14059660	648
	Cross-site Scripting (XSS) SNYK-JS-ASTRO-13961435	483

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• Max score is 1000. Note that the real score may have changed since the PR was raised.
• This PR was automatically created by Snyk using the credentials of a real user.

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Learn how to fix vulnerabilities with free interactive lessons:

🦉 Server-side Request Forgery (SSRF)
🦉 Cross-site Scripting (XSS)
🦉 Relative Path Traversal

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Watched Files

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Files Matched

• package-lock.json
• package.json