Bump PolySharp from 1.14.1 to 1.15.0

Bumps [PolySharp](https://github.com/Sergio0694/PolySharp) from 1.14.1 to 1.15.0.
- [Release notes](https://github.com/Sergio0694/PolySharp/releases)
- [Commits](Sergio0694/PolySharp@1.14.1...1.15.0)

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

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

Author: dependabot[bot]

Directory.Packages.props

@@ -23,7 +23,7 @@
     <PackageVersion Include="MSTest.TestFramework" Version="3.6.2" />
     <PackageVersion Include="Moq" Version="4.20.72" />
     <PackageVersion Include="Nerdbank.GitVersioning" Version="3.7.77-alpha" /> <!-- can use stable once 3.7 is released -->
-    <PackageVersion Include="PolySharp" Version="1.14.1" />
+    <PackageVersion Include="PolySharp" Version="1.15.0" />
     <PackageVersion Include="SonarAnalyzer.CSharp" Version="9.32.0.97167" />
     <PackageVersion Include="StyleCop.Analyzers" Version="1.2.0-beta.556" />
     <PackageVersion Include="System.Formats.Asn1" Version="8.0.1" />