chore: revert vitest version

Author: Codex-

package.json

@@ -40,7 +40,7 @@
     "@types/node": "~20.19.11",
     "@typescript-eslint/eslint-plugin": "^8.41.0",
     "@typescript-eslint/parser": "^8.41.0",
-    "@vitest/coverage-v8": "~3.2.4",
+    "@vitest/coverage-v8": "~3.1.4",
     "chalk": "^5.6.0",
     "changelogithub": "^13.16.0",
     "esbuild": "^0.25.9",
@@ -51,6 +51,6 @@
     "prettier": "3.6.2",
     "typescript": "^5.9.2",
     "typescript-eslint": "^8.41.0",
-    "vitest": "~3.2.4"
+    "vitest": "~3.1.4"
   }
 }