chore(deps): update dependency @sanity/pkg-utils to v8

Author: renovate[bot]

package.json

@@ -136,7 +136,7 @@
   "devDependencies": {
     "@commitlint/config-conventional": "^19.8.1",
     "@sanity/browserslist-config": "^1.0.5",
-    "@sanity/pkg-utils": "^7.11.7",
+    "@sanity/pkg-utils": "^8.1.21",
     "@sanity/prettier-config": "^1.0.6",
     "@sanity/semantic-release-preset": "^4.1.8",
     "@sanity/ui": "4.0.0-static.32",