Bump YamlDotNet from 15.1.0 to 15.1.1 (#970)

Bumps [YamlDotNet](https://github.com/aaubry/YamlDotNet) from 15.1.0 to 15.1.1.
- [Release notes](https://github.com/aaubry/YamlDotNet/releases)
- [Commits](aaubry/YamlDotNet@v15.1.0...v15.1.1)

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

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

server/Tingle.Dependabot/Tingle.Dependabot.csproj

@@ -41,7 +41,7 @@
     <PackageReference Include="Tingle.Extensions.DataAnnotations" Version="4.5.0" />
     <PackageReference Include="Tingle.Extensions.Serilog" Version="4.5.0" />
     <PackageReference Include="Tingle.PeriodicTasks" Version="1.4.0" />
-    <PackageReference Include="YamlDotNet" Version="15.1.0" />
+    <PackageReference Include="YamlDotNet" Version="15.1.1" />
   </ItemGroup>
 
   <ItemGroup>