Bump System.Numerics.Vectors from 4.6.0 to 4.6.1

---
updated-dependencies:
- dependency-name: System.Numerics.Vectors
  dependency-version: 4.6.1
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: system
...

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

Author: dependabot[bot]

Directory.Packages.props

@@ -8,6 +8,6 @@
     <PackageVersion Include="Microsoft.SourceLink.GitHub" Version="10.0.102" />
     <PackageVersion Include="Microsoft.SourceLink.AzureRepos.Git" Version="10.0.102" />
     <PackageVersion Include="Polyfill" Version="9.7.7" />
-    <PackageVersion Include="System.Numerics.Vectors" Version="4.5.0" />
+    <PackageVersion Include="System.Numerics.Vectors" Version="4.6.1" />
   </ItemGroup>
 </Project>

ThemeProvider.ImGui/ThemeProvider.ImGui.csproj

@@ -11,6 +11,7 @@
     <PackageReference Include="Microsoft.SourceLink.GitHub" />
     <PackageReference Include="Microsoft.SourceLink.AzureRepos.Git" />
     <PackageReference Include="Polyfill" PrivateAssets="all" />
+  <PackageReference Include="System.Numerics.Vectors" />
   </ItemGroup>
 
 </Project>