More cleanups.

Author: gfraiteur

global.json

@@ -1,11 +1,7 @@
 {
-  "//": "This file is generated by PostSharp.Engineering. Do not edit or add to git.",
   "sdk": {
-    "version": "8.0",
+    "version": "9.0.300",
     "rollForward": "patch",
-    "allowPrerelease": "false"
-  },
-  "msbuild-sdks": {
-    "PostSharp.Engineering.Sdk": "2023.2.197.1191-local-GaelFraiteur-debug"
+    "allowPrerelease": false
   }
 }

src/PostSharp.Engineering.BuildTools/Build/Files/GlobalJsonFile.cs

@@ -55,7 +55,7 @@ internal static bool TryWrite( BuildContext context, string? overrideSdkVersion
                 "sdk": {
                   "version": "{{overrideSdkVersion ?? product.DotNetSdkVersion.Version}}",
                   "rollForward": "{{rollForward}}",
-                  "allowPrerelease": "{{product.DotNetSdkVersion.AllowPrerelease.ToString().ToLowerInvariant()}}"
+                  "allowPrerelease": {{product.DotNetSdkVersion.AllowPrerelease.ToString().ToLowerInvariant()}}
                 },
                 "msbuild-sdks": {
                   "PostSharp.Engineering.Sdk": "{{VersionHelper.EngineeringVersion}}"