Bump Terminal.Gui in /src/Microsoft.PowerShell.ConsoleGuiTools (#237)

Bumps [Terminal.Gui](https://github.com/gui-cs/Terminal.Gui) from 1.14.0 to 1.15.1.
- [Release notes](https://github.com/gui-cs/Terminal.Gui/releases)
- [Commits](gui-cs/Terminal.Gui@v1.14.0...v1.15.1)

---
updated-dependencies:
- dependency-name: Terminal.Gui
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

src/Microsoft.PowerShell.ConsoleGuiTools/Microsoft.PowerShell.ConsoleGuiTools.csproj

@@ -15,8 +15,8 @@
     </PropertyGroup>
 
     <ItemGroup>
-        <PackageReference Include="Nstack.Core" Version="1.0.7" />
-        <PackageReference Include="Terminal.Gui" Version="1.14.0" />
+        <PackageReference Include="Nstack.Core" Version="1.1.1" />
+        <PackageReference Include="Terminal.Gui" Version="1.15.1" />
         <PackageReference Include="Microsoft.PowerShell.SDK" Version="7.2.18" />
     </ItemGroup>