Update dependency NanoByte.Common.AnsiCli to 2.21.3

Author: renovate[bot]

src/ZeroInstall.Bootstrap.Builder.csproj

@@ -28,7 +28,7 @@
 
   <!-- Dependencies -->
   <ItemGroup>
-    <PackageReference Include="NanoByte.Common.AnsiCli" Version="2.21.2" />
+    <PackageReference Include="NanoByte.Common.AnsiCli" Version="2.21.3" />
     <PackageReference Include="ZeroInstall.Store" Version="2.28.3" />
     <PackageReference Include="ZeroInstall.Client" Version="2.28.3" />
     <PackageReference Include="NDesk.Options.Patched" Version="0.3.2" />