Bump actions/setup-dotnet from 4 to 5 (#9878)

Bumps [actions/setup-dotnet](https://github.com/actions/setup-dotnet) from 4 to 5.
- [Release notes](https://github.com/actions/setup-dotnet/releases)
- [Commits](actions/setup-dotnet@v4...v5)

---
updated-dependencies:
- dependency-name: actions/setup-dotnet
  dependency-version: '5'
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

.github/workflows/cloud-support.yml

@@ -30,7 +30,7 @@ jobs:
         repository: microsoftgraph/msgraph-cloud-support
         path: tool
     - name: Setup .NET
-      uses: actions/setup-dotnet@v4
+      uses: actions/setup-dotnet@v5
       with:
         dotnet-version: 10.x
     - name: Build cloud support tool

.github/workflows/generate-ref-toc.yml

@@ -41,7 +41,7 @@ jobs:
         repository: microsoftgraph/msgraph-toc-gen
         path: tool
     - name: Setup .NET
-      uses: actions/setup-dotnet@v4
+      uses: actions/setup-dotnet@v5
       with:
         dotnet-version: 10.x
     - name: Build TOC generation tool