Bump the default group with 6 updates

Bumps the default group with 6 updates:

| Package | From | To |
| --- | --- | --- |
| [@astrojs/starlight](https://github.com/withastro/starlight/tree/HEAD/packages/starlight) | `0.37.0` | `0.37.1` |
| [@expressive-code/core](https://github.com/expressive-code/expressive-code/tree/HEAD/packages/@expressive-code/core) | `0.41.3` | `0.41.4` |
| [@expressive-code/plugin-collapsible-sections](https://github.com/expressive-code/expressive-code/tree/HEAD/packages/@expressive-code/plugin-collapsible-sections) | `0.41.3` | `0.41.4` |
| [@tailwindcss/vite](https://github.com/tailwindlabs/tailwindcss/tree/HEAD/packages/@tailwindcss-vite) | `4.1.17` | `4.1.18` |
| [astro](https://github.com/withastro/astro/tree/HEAD/packages/astro) | `5.16.4` | `5.16.5` |
| [tailwindcss](https://github.com/tailwindlabs/tailwindcss/tree/HEAD/packages/tailwindcss) | `4.1.17` | `4.1.18` |


Updates `@astrojs/starlight` from 0.37.0 to 0.37.1
- [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@0.37.1/packages/starlight)

Updates `@expressive-code/core` from 0.41.3 to 0.41.4
- [Release notes](https://github.com/expressive-code/expressive-code/releases)
- [Changelog](https://github.com/expressive-code/expressive-code/blob/main/packages/@expressive-code/core/CHANGELOG.md)
- [Commits](https://github.com/expressive-code/expressive-code/commits/@expressive-code/core@0.41.4/packages/@expressive-code/core)

Updates `@expressive-code/plugin-collapsible-sections` from 0.41.3 to 0.41.4
- [Release notes](https://github.com/expressive-code/expressive-code/releases)
- [Changelog](https://github.com/expressive-code/expressive-code/blob/main/packages/@expressive-code/plugin-collapsible-sections/CHANGELOG.md)
- [Commits](https://github.com/expressive-code/expressive-code/commits/@expressive-code/plugin-collapsible-sections@0.41.4/packages/@expressive-code/plugin-collapsible-sections)

Updates `@tailwindcss/vite` from 4.1.17 to 4.1.18
- [Release notes](https://github.com/tailwindlabs/tailwindcss/releases)
- [Changelog](https://github.com/tailwindlabs/tailwindcss/blob/main/CHANGELOG.md)
- [Commits](https://github.com/tailwindlabs/tailwindcss/commits/v4.1.18/packages/@tailwindcss-vite)

Updates `astro` from 5.16.4 to 5.16.5
- [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@5.16.5/packages/astro)

Updates `tailwindcss` from 4.1.17 to 4.1.18
- [Release notes](https://github.com/tailwindlabs/tailwindcss/releases)
- [Changelog](https://github.com/tailwindlabs/tailwindcss/blob/main/CHANGELOG.md)
- [Commits](https://github.com/tailwindlabs/tailwindcss/commits/v4.1.18/packages/tailwindcss)

---
updated-dependencies:
- dependency-name: "@astrojs/starlight"
  dependency-version: 0.37.1
  dependency-type: direct:production
  update-type: version-update:semver-patch
  dependency-group: default
- dependency-name: "@expressive-code/core"
  dependency-version: 0.41.4
  dependency-type: direct:production
  update-type: version-update:semver-patch
  dependency-group: default
- dependency-name: "@expressive-code/plugin-collapsible-sections"
  dependency-version: 0.41.4
  dependency-type: direct:production
  update-type: version-update:semver-patch
  dependency-group: default
- dependency-name: "@tailwindcss/vite"
  dependency-version: 4.1.18
  dependency-type: direct:production
  update-type: version-update:semver-patch
  dependency-group: default
- dependency-name: astro
  dependency-version: 5.16.5
  dependency-type: direct:production
  update-type: version-update:semver-patch
  dependency-group: default
- dependency-name: tailwindcss
  dependency-version: 4.1.18
  dependency-type: direct:production
  update-type: version-update:semver-patch
  dependency-group: default
...

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

Author: dependabot[bot]

package.json

@@ -15,16 +15,16 @@
   },
   "dependencies": {
     "@astrojs/check": "^0.9.6",
-    "@astrojs/starlight": "^0.37.0",
+    "@astrojs/starlight": "^0.37.1",
     "@astrojs/starlight-docsearch": "^0.6.1",
     "@astrojs/starlight-tailwind": "^4.0.2",
     "@astrojs/vercel": "^9.0.2",
-    "@expressive-code/core": "^0.41.3",
-    "@expressive-code/plugin-collapsible-sections": "^0.41.3",
-    "@tailwindcss/vite": "^4.1.17",
+    "@expressive-code/core": "^0.41.4",
+    "@expressive-code/plugin-collapsible-sections": "^0.41.4",
+    "@tailwindcss/vite": "^4.1.18",
     "@vercel/analytics": "^1.6.1",
     "@vercel/speed-insights": "^1.3.1",
-    "astro": "^5.16.4",
+    "astro": "^5.16.5",
     "astro-mermaid": "^1.2.0",
     "dotenv": "^17.2.3",
     "mermaid": "^11.12.2",
@@ -35,7 +35,7 @@
     "starlight-links-validator": "^0.19.2",
     "starlight-showcases": "^0.3.1",
     "starlight-sidebar-topics": "^0.6.2",
-    "tailwindcss": "^4.1.17",
+    "tailwindcss": "^4.1.18",
     "typescript": "^5.9.3"
   },
   "devDependencies": {