build(astro): migrate site to Astro 6

www/src/layouts/BaseLayout.astro

@@ -32,7 +32,7 @@ const organizationSchema = {
     <link rel="icon" href="/assets/images/favicon.svg" />
     <Seo title={title} description={description} canonical={canonical} image={image} lang={lang} type={type} />
     <slot name="head" />
-    <script type="application/ld+json" set:html={JSON.stringify(organizationSchema)} />
+    <script type="application/ld+json" is:inline set:html={JSON.stringify(organizationSchema)} />
   </head>
   <body>
     <a class="skip-link" href="#main">Skip to content</a>