chore: Update System.ValueTuple.

This avoids downgrade version errors in Firestore, Spanner, and a couple others.

Author: amanda-tarafa

Directory.Packages.props

@@ -64,7 +64,7 @@
     <PackageVersion Include="BenchmarkDotNet" Version="0.13.12" />
     <PackageVersion Include="Xunit.Combinatorial" Version="1.6.24" />
     <PackageVersion Include="System.Diagnostics.StackTrace" Version="4.3.0" />
-    <PackageVersion Include="System.ValueTuple" Version="4.6.1" />
+    <PackageVersion Include="System.ValueTuple" Version="4.6.2" />
     <PackageVersion Include="log4net" Version="2.0.17" />
     <PackageVersion Include="NLog" Version="5.5.1" />
     <PackageVersion Include="Grpc.AspNetCore" Version="2.76.0" />