Bump Microsoft.IdentityModel.Protocols

Bump Microsoft.IdentityModel.Protocols to 7.0.3 as there's been some bugs in v7 that .NET 8 is picking up e.g. dotnet/aspnetcore#51430.

Author: martincostello

Directory.Packages.props

@@ -7,7 +7,7 @@
     <PackageVersion Include="MartinCostello.Logging.XUnit" Version="0.3.0" />
     <PackageVersion Include="Microsoft.AspNetCore.Mvc.Testing" Version="8.0.0-rc.2.23480.2" />
     <PackageVersion Include="Microsoft.AspNetCore.TestHost" Version="8.0.0-rc.2.23480.2" />
-    <PackageVersion Include="Microsoft.IdentityModel.Protocols" Version="7.0.0" />
+    <PackageVersion Include="Microsoft.IdentityModel.Protocols" Version="7.0.3" />
     <PackageVersion Include="Shouldly" Version="4.2.1" />
   </ItemGroup>