chore: bump regular System.Text.RegularExpressions due to detected cve

Author: aygalinc

projects/Directory.Packages.props

@@ -16,6 +16,7 @@
     -->
     <PackageVersion Include="System.IO.Pipelines" Version="8.0.0" />
     <PackageVersion Include="System.Net.Http" Version="4.3.4" />
+    <PackageVersion Include="System.Text.RegularExpressions" Version="4.3.1" />
     <PackageVersion Include="System.Threading.RateLimiting" Version="8.0.0" />
     <PackageVersion Include="WireMock.Net" Version="1.5.62" />
     <PackageVersion Include="xunit" Version="2.9.0" />
@@ -48,4 +49,4 @@
     <GlobalPackageReference Include="Microsoft.SourceLink.GitHub" Version="8.0.0" />
     <GlobalPackageReference Include="MinVer" Version="5.0.0" />
   </ItemGroup>
-</Project>
+</Project>

projects/Test/OAuth2/OAuth2.csproj

@@ -28,6 +28,7 @@
 
   <ItemGroup>
     <PackageReference Include="Microsoft.NET.Test.Sdk" />
+    <PackageReference Include="System.Text.RegularExpressions" />
     <PackageReference Include="xunit" />
     <PackageReference Include="xunit.runner.visualstudio" PrivateAssets="all" />
     <PackageReference Include="System.Net.Http" />