Update dependency vitest to v0.31.1

ghost/admin-x-settings/package.json

@@ -77,6 +77,6 @@
     "typescript": "5.0.2",
     "vite": "4.3.2",
     "vite-plugin-svgr": "3.2.0",
-    "vitest": "0.31.0"
+    "vitest": "0.31.1"
   }
 }

ghost/portal/package.json

@@ -78,6 +78,6 @@
     "vite": "4.3.6",
     "vite-plugin-css-injected-by-js": "3.1.1",
     "vite-plugin-svgr": "3.2.0",
-    "vitest": "0.31.0"
+    "vitest": "0.31.1"
   }
 }