Bump GitVersion.Tool from 5.2.4 to 5.3.7

Bumps [GitVersion.Tool](https://github.com/GitTools/GitVersion) from 5.2.4 to 5.3.7.
- [Release notes](https://github.com/GitTools/GitVersion/releases)
- [Changelog](https://github.com/GitTools/GitVersion/blob/master/BREAKING_CHANGES.md)
- [Commits](GitTools/GitVersion@5.2.4...5.3.7)

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

Author: dependabot[bot]

Directory.Build.targets

@@ -8,7 +8,7 @@
         <PackageReference Include="Microsoft.NETFramework.ReferenceAssemblies" Version="1.0.0" PrivateAssets="All" />
     </ItemGroup>
     <ItemGroup>
-        <PackageReference Update="GitVersion.Tool" Version="5.2.4" />
+        <PackageReference Update="GitVersion.Tool" Version="5.3.7" />
         <PackageReference Update="JetBrains.ReSharper.CommandLineTools" Version="2019.3.4" />
         <PackageReference Update="ReportGenerator" Version="4.5.2" />
         <PackageReference Update="Rocket.Surgery.Nuke" Version="0.14.0-beta.8" />