Bump Microsoft.CodeAnalysis.NetAnalyzers from 6.0.0 to 7.0.3 in /src

Bumps [Microsoft.CodeAnalysis.NetAnalyzers](https://github.com/dotnet/roslyn-analyzers) from 6.0.0 to 7.0.3.
- [Release notes](https://github.com/dotnet/roslyn-analyzers/releases)
- [Changelog](https://github.com/dotnet/roslyn-analyzers/blob/main/PostReleaseActivities.md)
- [Commits](https://github.com/dotnet/roslyn-analyzers/commits)

---
updated-dependencies:
- dependency-name: Microsoft.CodeAnalysis.NetAnalyzers
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

Author: dependabot[bot]

src/Directory.Build.props

@@ -14,7 +14,7 @@
     </ItemGroup>
 
     <ItemGroup>
-        <PackageReference Include="Microsoft.CodeAnalysis.NetAnalyzers" Version="6.0.0">
+        <PackageReference Include="Microsoft.CodeAnalysis.NetAnalyzers" Version="7.0.3">
             <PrivateAssets>all</PrivateAssets>
             <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
         </PackageReference>