fix(deps): update dependency postgraphile to v5

Author: renovate[bot]

package.json

@@ -27,7 +27,7 @@
     "koa": "3.2.1",
     "koa-compress": "5.2.2",
     "pg": "8.22.0",
-    "postgraphile": "4.14.1"
+    "postgraphile": "5.0.3"
   },
   "// build": "Dependencies required to build the project",
   "devDependencies": {