Bump System.Collections.Immutable from 10.0.2 to 10.0.3

---
updated-dependencies:
- dependency-name: System.Collections.Immutable
  dependency-version: 10.0.3
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

Author: dependabot[bot]

Directory.Packages.props

@@ -7,7 +7,7 @@
     <PackageVersion Include="NUnit.Analyzers" Version="4.11.2" />
     <PackageVersion Include="NUnit3TestAdapter" Version="6.1.0" />
     <PackageVersion Include="StyleCop.Analyzers" Version="1.2.0-beta.556" />
-    <PackageVersion Include="System.Collections.Immutable" Version="10.0.2" />
+    <PackageVersion Include="System.Collections.Immutable" Version="10.0.3" />
     <PackageVersion Include="CommandLineParser" Version="2.9.1" />
     <PackageVersion Include="BenchmarkDotNet" Version="0.15.8" />
     <PackageVersion Include="coverlet.msbuild" Version="6.0.4" />