github-actions(deps): bump nuget/setup-nuget from 2 to 4

Bumps [nuget/setup-nuget](https://github.com/nuget/setup-nuget) from 2 to 4.
- [Release notes](https://github.com/nuget/setup-nuget/releases)
- [Commits](NuGet/setup-nuget@v2...v4)

---
updated-dependencies:
- dependency-name: nuget/setup-nuget
  dependency-version: '4'
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

Author: dependabot[bot]

.github/workflows/RocketModFix.UnityEngine.Redist.yaml

@@ -24,7 +24,7 @@ jobs:
       with:
         dotnet-version: 8.x
 
-    - uses: nuget/setup-nuget@v2
+    - uses: nuget/setup-nuget@v4
       name: Setup NuGet
       with:
         nuget-api-key: ${{ secrets.NUGET_DEPLOY_KEY }}