chore(deps): bump the npm group with 2 updates (#1152)

* chore(deps): bump the npm group with 2 updates

Bumps the npm group with 2 updates: [@astrojs/starlight](https://github.com/withastro/starlight/tree/HEAD/packages/starlight) and [astro](https://github.com/withastro/astro/tree/HEAD/packages/astro).


Updates `@astrojs/starlight` from 0.38.4 to 0.39.2
- [Release notes](https://github.com/withastro/starlight/releases)
- [Changelog](https://github.com/withastro/starlight/blob/main/packages/starlight/CHANGELOG.md)
- [Commits](https://github.com/withastro/starlight/commits/@astrojs/starlight@0.39.2/packages/starlight)

Updates `astro` from 6.2.1 to 6.3.1
- [Release notes](https://github.com/withastro/astro/releases)
- [Changelog](https://github.com/withastro/astro/blob/main/packages/astro/CHANGELOG.md)
- [Commits](https://github.com/withastro/astro/commits/astro@6.3.1/packages/astro)

---
updated-dependencies:
- dependency-name: "@astrojs/starlight"
  dependency-version: 0.39.2
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: npm
- dependency-name: astro
  dependency-version: 6.3.1
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: npm
...

Signed-off-by: dependabot[bot] <support@github.com>

* fix: refactor starlight sidebar for v0.39.0 compatibility

---------

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
Co-authored-by: Gil Desmarais <git@desmarais.de>

Author: dependabot[bot]

astro.config.mjs

@@ -281,11 +281,11 @@ export default defineConfig({
             "web-application/deployment",
             {
               label: "Guides",
-              autogenerate: { directory: "web-application/guides" },
+              items: [{ autogenerate: { directory: "web-application/guides" } }],
             },
             {
               label: "Reference",
-              autogenerate: { directory: "web-application/reference" },
+              items: [{ autogenerate: { directory: "web-application/reference" } }],
             },
           ],
         },
@@ -297,15 +297,15 @@ export default defineConfig({
             "ruby-gem/installation",
             {
               label: "Guides",
-              autogenerate: { directory: "ruby-gem/guides" },
+              items: [{ autogenerate: { directory: "ruby-gem/guides" } }],
             },
             {
               label: "Tutorials",
-              autogenerate: { directory: "ruby-gem/tutorials" },
+              items: [{ autogenerate: { directory: "ruby-gem/tutorials" } }],
             },
             {
               label: "Reference",
-              autogenerate: { directory: "ruby-gem/reference" },
+              items: [{ autogenerate: { directory: "ruby-gem/reference" } }],
             },
           ],
         },
@@ -316,7 +316,7 @@ export default defineConfig({
         {
           label: "Get Involved",
           collapsed: false,
-          autogenerate: { directory: "get-involved" },
+          items: [{ autogenerate: { directory: "get-involved" } }],
         },
       ],
       defaultLocale: "root",