Removed @vitest/utils patch that broke the production build (TryGhost#28011)

no ref

TryGhost#28009 shipped a `pnpm patch` of `@vitest/utils`. The production Docker
build runs `pnpm install --prod`, which fails with `ENOENT: no such file
or directory, open '/patches/@vitest__utils@4.1.5.patch'` — the
`patches/` directory isn't part of the Docker build context, so
`package.json`'s `patchedDependencies` reference points at a file that
isn't there.

Author: 9larsons

package.json

@@ -144,10 +144,7 @@
       "sharp",
       "sqlite3",
       "ssh2"
-    ],
-    "patchedDependencies": {
-      "@vitest/utils@4.1.5": "patches/@vitest__utils@4.1.5.patch"
-    }
+    ]
   },
   "devDependencies": {
     "@playwright/test": "catalog:",