feat: support dotnet-isolated 8.0 for managed APIs (#809)

schema/staticwebapp.config.json

@@ -589,6 +589,7 @@
             "dotnet:6.0",
             "dotnet-isolated:6.0",
             "dotnet-isolated:7.0",
+            "dotnet-isolated:8.0",
             "node:12",
             "node:14",
             "node:16",

src/core/constants.ts

@@ -240,7 +240,7 @@ export const DEFAULT_VERSION = {
 export const SUPPORTED_VERSIONS = {
   Node: ["12", "14", "16", "18"],
   Dotnet: ["3.1", "6.0"],
-  DotnetIsolated: ["6.0", "7.0"],
+  DotnetIsolated: ["6.0", "7.0", "8.0"],
   Python: ["3.8", "3.9", "3.10"],
 };