Bump Microsoft.NET.Test.Sdk from 17.12.0 to 18.0.1 (#253)

---
updated-dependencies:
- dependency-name: Microsoft.NET.Test.Sdk
  dependency-version: 18.0.1
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

Author: dependabot[bot]

source/OctoVersion.Tests/OctoVersion.Tests.csproj

@@ -9,7 +9,7 @@
   </PropertyGroup>
 
   <ItemGroup>
-    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.12.0" />
+    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="18.0.1" />
     <PackageReference Include="Shouldly" Version="4.2.1" />
     <PackageReference Include="TeamCity.VSTest.TestAdapter" Version="1.0.41" />
     <PackageReference Include="xunit" Version="2.9.3" />