fix: add write permissions to GitHub Actions workflow

Add contents:write and packages:write permissions to resolve 422 error
when creating GitHub releases. This allows the workflow to create releases
and upload NuGet package artifacts.

Author: michaelstonis

.github/workflows/publish.yml

@@ -6,6 +6,10 @@ on:
       - 'v*.*.*'
   workflow_dispatch:
 
+permissions:
+  contents: write
+  packages: write
+
 env:
   DOTNET_VERSION: '9.0.x'
   CONFIGURATION: Release