Update astro to ^6.4.6 (#182)

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

Author: renovate[bot]

demo/package.json

@@ -9,7 +9,7 @@
     "preview": "astro preview"
   },
   "devDependencies": {
-    "astro": "^6.4.2",
+    "astro": "^6.4.6",
     "astro-og-canvas": "workspace:*",
     "canvaskit-wasm": "^0.41.1"
   }

package.json

@@ -14,7 +14,7 @@
     "@astrojs/check": "^0.9.9",
     "@changesets/changelog-github": "^0.7.0",
     "@changesets/cli": "^2.31.0",
-    "astro": "^6.4.2",
+    "astro": "^6.4.6",
     "tsm": "^2.3.0",
     "typescript": "^6.0.3",
     "uvu": "^0.5.6"

packages/astro-og-canvas/package.json

@@ -31,7 +31,7 @@
   ],
   "devDependencies": {
     "@types/node": "^18.19.130",
-    "astro": "^6.4.2",
+    "astro": "^6.4.6",
     "typescript": "^6.0.3"
   },
   "dependencies": {