Explicitly disable roll-foward for .NET tools

Author: atifaziz

.config/dotnet-tools.json

@@ -6,19 +6,22 @@
       "version": "1.5.0",
       "commands": [
         "dotnet-script"
-      ]
+      ],
+      "rollForward": false
     },
     "sourcelink": {
       "version": "3.1.1",
       "commands": [
         "sourcelink"
-      ]
+      ],
+      "rollForward": false
     },
     "powershell": {
       "version": "7.4.2",
       "commands": [
         "pwsh"
-      ]
+      ],
+      "rollForward": false
     }
   }
 }