Upgrade laravel (#9081)

* Hotfix to develop to yank extraneous e()

* Upgrade Laravel release only to a later 6.18.x version

* Upgrade Laravel to 6.x and Passport 9.x, the recommended versions

composer.json

@@ -34,9 +34,9 @@
     "guzzlehttp/guzzle": "^6.5",
     "intervention/image": "^2.5",
     "javiereguiluz/easyslugger": "^1.0",
-    "laravel/framework": "^6.0",
+    "laravel/framework": "^6.20",
     "laravel/helpers": "^1.2",
-    "laravel/passport": "^8.4",
+    "laravel/passport": "^9.3.2",
     "laravel/slack-notification-channel": "^2.0",
     "laravel/tinker": "^2.4",
     "laravelcollective/html": "^6.0",
@@ -108,9 +108,6 @@
     "preferred-install": "dist",
     "sort-packages": true,
     "optimize-autoloader": true,
-    "process-timeout": 3000,
-    "platform": {
-      "php": "7.2"
-    }
+    "process-timeout": 3000
   }
 }