Bump nuget/setup-nuget from 3.0.0 to 3.1.0 in the github-actions group

Bumps the github-actions group with 1 update: [nuget/setup-nuget](https://github.com/nuget/setup-nuget).


Updates `nuget/setup-nuget` from 3.0.0 to 3.1.0
- [Release notes](https://github.com/nuget/setup-nuget/releases)
- [Commits](NuGet/setup-nuget@12c5794...b26b823)

---
updated-dependencies:
- dependency-name: nuget/setup-nuget
  dependency-version: 3.1.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: github-actions
...

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

Author: dependabot[bot]

.github/workflows/build.yml

@@ -41,7 +41,7 @@ jobs:
     # We move faster than GitHub's Python runtimes, so use NuGet instead
     # One day we can use ourselves to download Python, but not yet...
     - name: Set up NuGet
-      uses: nuget/setup-nuget@12c57947e9458a5b976961b08ea0706a17dd71ae # v3.0.0
+      uses: nuget/setup-nuget@b26b823c478ee115be5c9403e62c90b0bf943843 # v3.1.0
 
     - name: Set up Python 3.14.4
       run: |