Bump YamlDotNet from 15.1.4 to 15.3.0 in /dotnet

Bumps [YamlDotNet](https://github.com/aaubry/YamlDotNet) from 15.1.4 to 15.3.0.
- [Release notes](https://github.com/aaubry/YamlDotNet/releases)
- [Commits](aaubry/YamlDotNet@v15.1.4...v15.3.0)

---
updated-dependencies:
- dependency-name: YamlDotNet
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

dotnet/Directory.Packages.props

@@ -83,7 +83,7 @@
     <PackageVersion Include="Grpc.Net.Client" Version="2.63.0" />
     <PackageVersion Include="protobuf-net" Version="3.2.30" />
     <PackageVersion Include="protobuf-net.Reflection" Version="3.2.12" />
-    <PackageVersion Include="YamlDotNet" Version="15.1.4" />
+    <PackageVersion Include="YamlDotNet" Version="15.3.0" />
     <PackageVersion Include="Fluid.Core" Version="2.10.0" />
     <!-- Memory stores -->
     <PackageVersion Include="Microsoft.Azure.Cosmos" Version="3.41.0-preview.0" />