Bump Microsoft.Build.Utilities.Core from 17.8.3 to 17.8.43

---
updated-dependencies:
- dependency-name: Microsoft.Build.Utilities.Core
  dependency-version: 17.8.43
  dependency-type: direct:production
...

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

src/PixiEditor.Extensions.MSBuild/PixiEditor.Extensions.MSBuild.csproj

@@ -6,7 +6,7 @@
     </PropertyGroup>
 
     <ItemGroup>
-      <PackageReference Include="Microsoft.Build.Utilities.Core" Version="17.8.3" />
+      <PackageReference Include="Microsoft.Build.Utilities.Core" Version="17.8.43" />
     </ItemGroup>
 
 </Project>