Bump protobuf-net.BuildTools from 3.0.101 to 3.0.115

Bumps [protobuf-net.BuildTools](https://github.com/protobuf-net/protobuf-net) from 3.0.101 to 3.0.115.
- [Release notes](https://github.com/protobuf-net/protobuf-net/releases)
- [Changelog](https://github.com/protobuf-net/protobuf-net/blob/main/docs/releasenotes.md)
- [Commits](https://github.com/protobuf-net/protobuf-net/commits)

---
updated-dependencies:
- dependency-name: protobuf-net.BuildTools
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

src/Tests/Tests.csproj

@@ -8,7 +8,7 @@
   <ItemGroup>
     <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.0.0" />
     <PackageReference Include="Microsoft.OData.Client" Version="7.9.4" />
-    <PackageReference Include="protobuf-net.BuildTools" Version="3.0.101">
+    <PackageReference Include="protobuf-net.BuildTools" Version="3.0.115">
       <PrivateAssets>all</PrivateAssets>
       <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
     </PackageReference>