feat: upgrade swa runtime version

Author: Jikun

schema/staticwebapp.config.json

@@ -585,20 +585,14 @@
         "apiRuntime": {
           "type": "string",
           "enum": [
-            "dotnet:3.1",
-            "dotnet:6.0",
-            "dotnet-isolated:6.0",
-            "dotnet-isolated:7.0",
+            "dotnet:8.0",
             "dotnet-isolated:8.0",
             "dotnet-isolated:9.0",
-            "node:12",
-            "node:14",
-            "node:16",
             "node:18",
             "node:20",
-            "python:3.8",
             "python:3.9",
-            "python:3.10"
+            "python:3.10",
+            "python:3.11"
           ],
           "description": "Language runtime for the managed functions API"
         }