build(deps-dev): bump @docusaurus/tsconfig from 3.8.1 to 3.9.1 (#1137)

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

package-lock.json

@@ -26,7 +26,7 @@
   },
   "devDependencies": {
     "@docusaurus/module-type-aliases": "^3.7.0",
-    "@docusaurus/tsconfig": "3.8.1",
+    "@docusaurus/tsconfig": "3.9.1",
     "typescript": "5.9.2",
     "prettier": "3.6.2"
   },