chore: revise net6 baseline (aws-amplify#12327)

Author: Kamil Sobol

packages/amplify-dotnet-function-template-provider/resources/lambda/global.json

@@ -1,6 +1,6 @@
 {
   "sdk": {
-    "version": "6.0.300",
+    "version": "6.0.100",
     "rollForward": "latestFeature"
   }
 }