Bump FsUnit from 5.2.0 to 5.3.0

Bumps [FsUnit](https://github.com/fsprojects/FsUnit) from 5.2.0 to 5.3.0.
- [Release notes](https://github.com/fsprojects/FsUnit/releases)
- [Changelog](https://github.com/fsprojects/FsUnit/blob/master/RELEASE_NOTES.md)
- [Commits](fsprojects/FsUnit@5.2.0...5.3.0)

---
updated-dependencies:
- dependency-name: FsUnit
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

src/FSharp.Tests/FSharp.Tests.fsproj

@@ -1,4 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
+<?xml version="1.0" encoding="utf-8"?>
 <Project Sdk="Microsoft.NET.Sdk">
     <PropertyGroup>
         <OutputType>Exe</OutputType>
@@ -36,7 +36,7 @@
     <ItemGroup>
         <PackageReference Include="NUnit" Version="3.13.3" />
         <PackageReference Include="NUnitLite" Version="3.13.3" />
-        <PackageReference Include="FsUnit" Version="5.2.0" />
+        <PackageReference Include="FsUnit" Version="5.3.0" />
         <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.5.0" />
         <PackageReference Include="Microsoft.NETFramework.ReferenceAssemblies" Version="1.0.3">
             <PrivateAssets>all</PrivateAssets>