Bump Polyfill from 10.2.0 to 10.3.0

---
updated-dependencies:
- dependency-name: Polyfill
  dependency-version: 10.3.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

src/Directory.Packages.props

@@ -8,7 +8,7 @@
     <PackageVersion Include="Microsoft.CSharp" Version="4.7.0" />
     <PackageVersion Include="Microsoft.NET.Test.Sdk" Version="18.4.0" />
     <PackageVersion Include="OpenMcdf" Version="3.1.2" />
-    <PackageVersion Include="Polyfill" Version="10.2.0" />
+    <PackageVersion Include="Polyfill" Version="10.3.0" />
     <PackageVersion Include="ProjectDefaults" Version="1.0.172" />
     <PackageVersion Include="Verify.DiffPlex" Version="3.1.2" />
     <PackageVersion Include="Verify.XunitV3" Version="31.15.0" />