Bump undici and @sveltejs/kit

Bumps [undici](https://github.com/nodejs/undici) to 5.26.4 and updates ancestor dependency [@sveltejs/kit](https://github.com/sveltejs/kit/tree/HEAD/packages/kit). These dependencies need to be updated together.


Updates `undici` from 5.25.3 to 5.26.4
- [Release notes](https://github.com/nodejs/undici/releases)
- [Commits](nodejs/undici@v5.25.3...v5.26.4)

Updates `@sveltejs/kit` from 1.25.1 to 1.26.0
- [Release notes](https://github.com/sveltejs/kit/releases)
- [Changelog](https://github.com/sveltejs/kit/blob/master/packages/kit/CHANGELOG.md)
- [Commits](https://github.com/sveltejs/kit/commits/@sveltejs/kit@1.26.0/packages/kit)

---
updated-dependencies:
- dependency-name: undici
  dependency-type: indirect
- dependency-name: "@sveltejs/kit"
  dependency-type: direct:development
...

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

package.json

@@ -17,7 +17,7 @@
 	"devDependencies": {
 		"@playwright/test": "^1.28.1",
 		"@sveltejs/adapter-auto": "^2.0.0",
-		"@sveltejs/kit": "^1.20.4",
+		"@sveltejs/kit": "^1.26.0",
 		"@types/jquery": "^3.5.22",
 		"eslint": "^8.28.0",
 		"eslint-config-prettier": "^8.5.0",