Bump System.Text.Json to 9.0.8

---
updated-dependencies:
- dependency-name: System.Text.Json
  dependency-version: 9.0.8
  dependency-type: direct:production
  update-type: version-update:semver-patch
- dependency-name: System.Text.Json
  dependency-version: 9.0.8
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

performance/resultsComparer/resultsComparer.csproj

@@ -13,7 +13,7 @@
     <PackageReference Include="Microsoft.Extensions.Logging.Console" Version="9.0.7" />
     <PackageReference Include="Microsoft.Extensions.Logging.Debug" Version="9.0.7" />
     <PackageReference Include="System.CommandLine" Version="2.0.0-beta5.25306.1" />
-    <PackageReference Include="system.text.json" Version="9.0.7" />
+    <PackageReference Include="system.text.json" Version="9.0.8" />
   </ItemGroup>
 
 </Project>

test/Microsoft.OpenApi.Tests/Microsoft.OpenApi.Tests.csproj

@@ -13,7 +13,7 @@
     <PackageReference Include="FluentAssertions" Version="7.2.0" />
     <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.14.1" />
     <PackageReference Include="Moq" Version="4.20.72" />
-    <PackageReference Include="System.Text.Json" Version="9.0.7" />
+    <PackageReference Include="System.Text.Json" Version="9.0.8" />
     <PackageReference Include="Verify.Xunit" Version="30.4.0" />
     <PackageReference Include="xunit" Version="2.9.3" />
     <PackageReference Include="xunit.runner.visualstudio" Version="3.1.2" PrivateAssets="all" />