Merge pull request #405 from microsoft/chore/devcontainer-dotnet10

Update devcontainer.json to use .NET 10 GA

Author: leestott

.devcontainer/devcontainer.json

@@ -3,10 +3,10 @@
   "features": {
     "azure-cli": "latest",
     "ghcr.io/devcontainers/features/node:1": {
-      "version": "20"
+      "version": "lts"
     },
     "ghcr.io/devcontainers/features/dotnet:latest": {
-      "version": "10.0-preview"
+      "version": "10.0"
     }
   },
   "hostRequirements": {