update roslyn version

Author: beccamc

package.json

@@ -37,7 +37,7 @@
     }
   },
   "defaults": {
-    "roslyn": "4.8.0-3.23458.4",
+    "roslyn": "4.8.0-3.23463.5",
     "omniSharp": "1.39.7",
     "razor": "7.0.0-preview.23456.2",
     "razorOmnisharp": "7.0.0-preview.23363.1"
@@ -4992,4 +4992,4 @@
       }
     ]
   }
-}
+}