Bump System.Text.Encodings.Web and System.Text.Json

Bumps System.Text.Encodings.Web from 4.7.2 to 10.0.0
Bumps System.Text.Json from 4.7.2 to 10.0.0

---
updated-dependencies:
- dependency-name: System.Text.Encodings.Web
  dependency-version: 10.0.0
  dependency-type: direct:production
  update-type: version-update:semver-major
  dependency-group: all-dependencies
- dependency-name: System.Text.Json
  dependency-version: 10.0.0
  dependency-type: direct:production
  update-type: version-update:semver-major
  dependency-group: all-dependencies
...

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

Author: dependabot[bot]

src/TestableHttpClient/TestableHttpClient.csproj

@@ -32,8 +32,8 @@
   </PropertyGroup>
 
   <ItemGroup Condition="'$(TargetFramework)' == 'netstandard2.0'">
-    <PackageReference Include="System.Text.Json" Version="4.7.2" />
-    <PackageReference Include="System.Text.Encodings.Web" Version="4.7.2" />
+    <PackageReference Include="System.Text.Json" Version="10.0.0" />
+    <PackageReference Include="System.Text.Encodings.Web" Version="10.0.0" />
     <PackageReference Include="Perfors.UnreachableException" Version="1.0.0" />
     <PackageReference Include="PolyKit.Embedded" Version="3.0.9" />
   </ItemGroup>