Move the CLIs to Nullean.Argh 0.27.1 (#4823)

* Move the CLIs to Nullean.Argh 0.25.0

[Hidden] now hides a command from help only; the five CI-only commands that the CLI reference must leave out say [Hidden(Schema = true)], so the schema keeps marking them hidden. The regenerated docs/cli-schema.json has the same content as before; Argh no longer escapes < and " in its JSON.

Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>

* Use Nullean.Argh 0.27.1 instead of 0.25.0

0.26.1 and the releases after it fix the Nullean.Make.Fs gaps the build rewrite needs, and 0.27.1 is the first of them on NuGet. The CLIs behave as they did on 0.25.0: the tests pass, the schema is unchanged and the AOT publishes have no warnings.

Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>

---------

Co-authored-by: Claude Sonnet 5.5 <noreply@anthropic.com>

Author: Mpdreamz

Directory.Packages.props

@@ -76,9 +76,9 @@
     <PackageVersion Include="FSharp.Core" Version="10.1.301" />
   </ItemGroup>
   <ItemGroup>
-    <PackageVersion Include="Nullean.Argh" Version="0.16.4" />
-    <PackageVersion Include="Nullean.Argh.Hosting" Version="0.16.4" />
-    <PackageVersion Include="Nullean.Argh.Interfaces" Version="0.16.4" />
+    <PackageVersion Include="Nullean.Argh" Version="0.27.1" />
+    <PackageVersion Include="Nullean.Argh.Hosting" Version="0.27.1" />
+    <PackageVersion Include="Nullean.Argh.Interfaces" Version="0.27.1" />
     <PackageVersion Include="Crayon" Version="2.0.69" />
     <PackageVersion Include="DotNet.Glob" Version="3.1.3" />
     <PackageVersion Include="Errata" Version="0.16.0" />