(deps): Bump Microsoft.CSharp and Scriban in /new-cli

Bumps Microsoft.CSharp and [Scriban](https://github.com/scriban/scriban). These dependencies needed to be updated together.

Updates `Microsoft.CSharp` from 4.7.0 to 4.5.0

Updates `Scriban` from 5.11.0 to 5.12.0
- [Release notes](https://github.com/scriban/scriban/releases)
- [Changelog](https://github.com/scriban/scriban/blob/master/changelog.md)
- [Commits](scriban/scriban@5.11.0...5.12.0)

---
updated-dependencies:
- dependency-name: Microsoft.CSharp
  dependency-type: direct:production
  update-type: version-update:semver-minor
- dependency-name: Scriban
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

new-cli/Directory.Packages.props

@@ -15,7 +15,7 @@
     <PackageVersion Include="Roslynator.Analyzers" Version="4.12.9" />
     <PackageVersion Include="Roslynator.Formatting.Analyzers" Version="4.12.9" />
     <!-- specific packages -->
-    <PackageVersion Include="Scriban" Version="5.11.0" />
+    <PackageVersion Include="Scriban" Version="5.12.0" />
     <PackageVersion Include="Serilog.Extensions.Logging" Version="8.0.0" />
     <PackageVersion Include="Serilog.Sinks.Console" Version="6.0.0" />
     <PackageVersion Include="Serilog.Sinks.File" Version="6.0.0" />