Update PNPM to v10.12.4

Author: jrjohnson

package.json

@@ -98,7 +98,7 @@
   "ember-addon": {
     "configPath": "tests/dummy/config"
   },
-  "packageManager": "pnpm@8.6.12",
+  "packageManager": "pnpm@10.12.4",
   "files": [
     "index.js",
     "ember-cli-build.js",