Fix build issues: Update .NET SDK to 8.0.117 and dotnet-repl to 0.1.216

Co-authored-by: jamesmontemagno <[email protected]>

Author: Copilot

.config/dotnet-tools.json

@@ -3,7 +3,7 @@
     "isRoot": true,
     "tools": {
       "dotnet-repl": {
-        "version": "0.1.204",
+        "version": "0.1.216",
         "commands": [
           "dotnet-repl"
         ]

global.json

@@ -1,6 +1,6 @@
 {
     "sdk": {
-      "version": "7.0.100",
+      "version": "8.0.117",
       "rollForward": "latestFeature"
     }
 }