Bump MessagePack from 3.0.308 to 3.1.0 in the tests group

Bumps the tests group with 1 update: [MessagePack](https://github.com/MessagePack-CSharp/MessagePack-CSharp).


Updates `MessagePack` from 3.0.308 to 3.1.0
- [Release notes](https://github.com/MessagePack-CSharp/MessagePack-CSharp/releases)
- [Commits](https://github.com/MessagePack-CSharp/MessagePack-CSharp/commits/v3.1.0)

---
updated-dependencies:
- dependency-name: MessagePack
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: tests
...

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

src/Tests/EFCoreSecondLevelCacheInterceptor.Tests/EFCoreSecondLevelCacheInterceptor.Tests.csproj

@@ -24,7 +24,7 @@
         <PackageReference Include="EasyCaching.Bus.Redis" Version="1.9.2"/>
         <PackageReference Include="EasyCaching.Serialization.MessagePack" Version="1.9.2"/>
         <PackageReference Include="EasyCaching.Serialization.SystemTextJson" Version="1.9.2"/>
-        <PackageReference Include="MessagePack" Version="3.0.308"/>
+        <PackageReference Include="MessagePack" Version="3.1.0"/>
         <PackageReference Include="StackExchange.Redis" Version="2.8.22"/>
 
         <PackageReference Include="Microsoft.EntityFrameworkCore" Version="9.0.0"/>