Bump splat from 7.3.6 to 7.3.7 (#30)

Bumps [splat](https://github.com/reactiveui/splat) from 7.3.6 to 7.3.7.
- [Release notes](https://github.com/reactiveui/splat/releases)
- [Changelog](https://github.com/reactiveui/splat/blob/master/RELEASENOTES.md)
- [Commits](reactiveui/splat@7.3.6...7.3.7)

Signed-off-by: dependabot-preview[bot] <support@dependabot.com>

src/Pharmacist.Core/Pharmacist.Core.csproj

@@ -16,7 +16,7 @@
     <PackageReference Include="NuGet.Protocol" Version="4.8.2" />
     <PackageReference Include="NuGet.LibraryModel" Version="4.8.2" />
     <PackageReference Include="polly" Version="7.1.0" />
-    <PackageReference Include="splat" Version="7.3.6" />
+    <PackageReference Include="splat" Version="7.3.7" />
     <PackageReference Include="system.collections.immutable" Version="1.5.0" />
     <PackageReference Include="System.Runtime.CompilerServices.Unsafe" Version="4.5.2" />
   </ItemGroup>