Update .NET SDK to 9.0.308 (#2816)

* Update .NET SDK

Update .NET SDK to version 9.0.308.

---
updated-dependencies:
- dependency-name: Microsoft.NET.Sdk
  dependency-version: 9.0.308
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: polly-updater-bot[bot] <138034000+polly-updater-bot[bot]@users.noreply.github.com>

* Suppress IDE0032

Suppress IDE0032 until Stryker supports .NET 10 and C# 14 and #2531 can be merged.

* Fix mutation tests

Try to prevent stryker from rolling forward to the .NET 10 SDK.

---------

Signed-off-by: polly-updater-bot[bot] <138034000+polly-updater-bot[bot]@users.noreply.github.com>
Co-authored-by: polly-updater-bot[bot] <138034000+polly-updater-bot[bot]@users.noreply.github.com>
Co-authored-by: Martin Costello <[email protected]>

Author: polly-updater-bot[bot]

Directory.Build.props

@@ -2,6 +2,8 @@
   <PropertyGroup>
     <ManagePackageVersionsCentrally>true</ManagePackageVersionsCentrally>
     <UseArtifactsOutput>true</UseArtifactsOutput>
+    <!-- HACK Workaround until stryker supports C# 14 (.NET 10) -->
+    <NoWarn>$(NoWarn);IDE0032</NoWarn>
   </PropertyGroup>
   <PropertyGroup Condition=" '$(CI)' == 'true' ">
     <ContinuousIntegrationBuild>true</ContinuousIntegrationBuild>

global.json

@@ -1,7 +1,7 @@
 {
   "sdk": {
-    "version": "9.0.307",
+    "version": "9.0.308",
     "allowPrerelease": false,
-    "rollForward": "latestMajor"
+    "rollForward": "latestMinor"
   }
 }