fix(deps): update dependency @astrojs/starlight to v0.29.0 (#149)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

bun.lockb

@@ -18,7 +18,7 @@
     "plop": "plop"
   },
   "dependencies": {
-    "@astrojs/starlight": "0.28.6",
+    "@astrojs/starlight": "0.29.0",
     "astro": "4.16.10",
     "sharp": "0.33.5"
   },