specify .net 10

Author: wallymathieu

global.json

@@ -1,13 +1,14 @@
 {
   "sdk": {
-    "version": "9.0.0",
+    "version": "10.0.0",
     "rollForward": "latestFeature",
     "allowPrerelease": true
   },
 
   "additionalSdks": [
     "5.0.405",
     "6.0.201",
-    "7.0.100"
+    "7.0.100",
+    "8.0.100"
   ]
 }