Bump YamlDotNet from 15.1.2 to 15.1.4

Bumps [YamlDotNet](https://github.com/aaubry/YamlDotNet) from 15.1.2 to 15.1.4.
- [Release notes](https://github.com/aaubry/YamlDotNet/releases)
- [Commits](aaubry/YamlDotNet@v15.1.2...v15.1.4)

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

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

server/Tingle.Dependabot/Tingle.Dependabot.csproj

@@ -40,7 +40,7 @@
     <PackageReference Include="Tingle.Extensions.Primitives" Version="4.8.0" />
     <PackageReference Include="Tingle.Extensions.Serilog" Version="4.8.0" />
     <PackageReference Include="Tingle.PeriodicTasks" Version="1.4.1" />
-    <PackageReference Include="YamlDotNet" Version="15.1.2" />
+    <PackageReference Include="YamlDotNet" Version="15.1.4" />
   </ItemGroup>
 
   <ItemGroup>