Bump Whisper.net from 1.7.4 to 1.8.1

Bumps [Whisper.net](https://github.com/sandrohanea/whisper.net) from 1.7.4 to 1.8.1.
- [Release notes](https://github.com/sandrohanea/whisper.net/releases)
- [Commits](sandrohanea/whisper.net@1.7.4...1.8.1)

---
updated-dependencies:
- dependency-name: Whisper.net
  dependency-version: 1.8.1
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

LLama.Examples/LLama.Examples.csproj

@@ -22,7 +22,7 @@
     <PackageReference Include="SixLabors.ImageSharp" Version="3.1.7" />
     <PackageReference Include="Spectre.Console" Version="0.50.0" />
     <PackageReference Include="Spectre.Console.ImageSharp" Version="0.50.0" />
-    <PackageReference Include="Whisper.net" Version="1.7.4" />
+    <PackageReference Include="Whisper.net" Version="1.8.1" />
     <PackageReference Include="Whisper.net.Runtime" Version="1.8.1" />
     <PackageReference Include="Whisper.net.Runtime.Clblast" Version="1.5.0" />
     <PackageReference Include="Whisper.net.Runtime.CoreML" Version="1.7.4" />