deps,test: update postject to 1.0.0-alpha.6

PR-URL: #48072
Reviewed-By: Michaël Zasso <[email protected]>
Reviewed-By: Marco Ippolito <[email protected]>
Reviewed-By: Mohammed Keyvanzadeh <[email protected]>
Reviewed-By: Darshan Sen <[email protected]>

Author: nodejs-github-bot

test/fixtures/postject-copy/node_modules/.package-lock.json

@@ -10,6 +10,6 @@
   "author": "",
   "license": "ISC",
   "dependencies": {
-    "postject": "^1.0.0-alpha.5"
+    "postject": "^1.0.0-alpha.6"
   }
 }