chore(deps): bump System.Text.Json from 8.0.5 to 9.0.0

Bumps [System.Text.Json](https://github.com/dotnet/runtime) from 8.0.5 to 9.0.0.
- [Release notes](https://github.com/dotnet/runtime/releases)
- [Commits](dotnet/runtime@v8.0.5...v9.0.0)

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

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

Author: dependabot[bot]

src/Microsoft.OpenApi.Hidi/Microsoft.OpenApi.Hidi.csproj

@@ -45,7 +45,7 @@
     <!--STJ
     required until Microsoft.Extensions.Logging.Console and Microsoft.Extensions.Configuration.Json
     update their dependencies -->
-    <PackageReference Include="System.Text.Json" Version="8.0.5" />
+    <PackageReference Include="System.Text.Json" Version="9.0.0" />
   </ItemGroup>
 
   <ItemGroup>

src/Microsoft.OpenApi.Readers/Microsoft.OpenApi.Readers.csproj

@@ -31,7 +31,7 @@
         </PackageReference>
 
         <PackageReference Include="SharpYaml" Version="2.1.1" />
-        <PackageReference Include="System.Text.Json" Version="8.0.5" />
+        <PackageReference Include="System.Text.Json" Version="9.0.0" />
     </ItemGroup>
 
     <ItemGroup>

src/Microsoft.OpenApi/Microsoft.OpenApi.csproj

@@ -22,7 +22,7 @@
         <ContinuousIntegrationBuild>true</ContinuousIntegrationBuild>
     </PropertyGroup>
     <ItemGroup>        
-        <PackageReference Include="System.Text.Json" Version="8.0.5" />
+        <PackageReference Include="System.Text.Json" Version="9.0.0" />
     </ItemGroup>
 
     <ItemGroup>

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

@@ -24,7 +24,7 @@
         <PackageReference Include="xunit" Version="2.9.2" />
         <PackageReference Include="xunit.runner.visualstudio" Version="2.8.2" PrivateAssets="all" />
         <!--STJ required until Microsoft.Extensions.Logging.Console and Microsoft.Extensions.Configuration.Json update their dependencies -->
-        <PackageReference Include="System.Text.Json" Version="8.0.5" />
+        <PackageReference Include="System.Text.Json" Version="9.0.0" />
     </ItemGroup>
 
     <ItemGroup>