Bump TimePeriodLibrary.NET from 2.1.4 to 2.1.5 in /ChronoJsonDiffPatch

Bumps [TimePeriodLibrary.NET](https://github.com/Giannoudis/TimePeriodLibrary) from 2.1.4 to 2.1.5.
- [Release notes](https://github.com/Giannoudis/TimePeriodLibrary/releases)
- [Changelog](https://github.com/Giannoudis/TimePeriodLibrary/blob/master/docs/ChangeHistory.txt)
- [Commits](Giannoudis/TimePeriodLibrary@v2.1.4...v2.1.5)

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

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

ChronoJsonDiffPatch/ChronoJsonDiffPatch/ChronoJsonDiffPatch.csproj

@@ -23,7 +23,7 @@
         <PrivateAssets>all</PrivateAssets>
         <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
       </PackageReference>
-      <PackageReference Include="TimePeriodLibrary.NET" Version="2.1.4" />
+      <PackageReference Include="TimePeriodLibrary.NET" Version="2.1.5" />
     </ItemGroup>
 
 </Project>