Bump main stable versions (#15247)

* Try bump versions

* Bump variables also

* Fix versions

* Try not do parallel

* Use Ventura for templates also

* Use Ventura on the release

eng/cake/dotnet.cake

@@ -131,7 +131,7 @@ Task("dotnet-build")
         RunMSBuildWithDotNet("./Microsoft.Maui.BuildTasks.slnf");
         if (IsRunningOnWindows())
         {
-            RunMSBuildWithDotNet("./Microsoft.Maui.sln");
+            RunMSBuildWithDotNet("./Microsoft.Maui.sln", maxCpuCount:1);
         }
         else
         {

eng/pipelines/common/variables.yml

@@ -6,7 +6,7 @@ variables:
 - name: DOTNET_SKIP_FIRST_TIME_EXPERIENCE
   value: true
 - name: DOTNET_VERSION
-  value: 7.0.100
+  value: 7.0.203
 - name: REQUIRED_XCODE
   value: 14.3.0
 - name: DEVICETESTS_REQUIRED_XCODE

global.json

@@ -1,6 +1,6 @@
 {
   "tools": {
-    "dotnet": "6.0.100"
+    "dotnet": "7.0.203"
   },
   "msbuild-sdks": {
     "MSBuild.Sdk.Extras": "3.0.44",