MNT Update development dependencies

Author: GuySartorelli

composer.json

@@ -14,7 +14,7 @@
     ],
     "require": {
         "php": "^7.4 || ^8.0",
-        "silverstripe/framework": "^4.10",
+        "silverstripe/framework": "4.13.x-dev",
         "colymba/gridfield-bulk-editing-tools": "^3.0.0-beta4"
     },
     "suggest": {
@@ -46,4 +46,4 @@
     "license": "BSD-3-Clause",
     "minimum-stability": "dev",
     "prefer-stable": true
-}
+}