Bump actions/setup-dotnet from 5 to 6

Bumps [actions/setup-dotnet](https://github.com/actions/setup-dotnet) from 5 to 6.
- [Release notes](https://github.com/actions/setup-dotnet/releases)
- [Commits](https://github.com/actions/setup-dotnet/compare/v5...v6)

---
updated-dependencies:
- dependency-name: actions/setup-dotnet
  dependency-version: '6'
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

.github/workflows/build-frontends.yml

@@ -19,7 +19,7 @@ jobs:
         fetch-depth: 0
         persist-credentials: false
         
-    - uses: actions/setup-dotnet@v5
+    - uses: actions/setup-dotnet@v6
       with:
         dotnet-version: '11.0.x'
         dotnet-quality: 'preview'

.github/workflows/build-ilspy.yml

@@ -42,7 +42,7 @@ jobs:
         fetch-depth: 0
         persist-credentials: false
 
-    - uses: actions/setup-dotnet@v5
+    - uses: actions/setup-dotnet@v6
       with:
         dotnet-version: ${{ env.DOTNET_SDK_VERSION }}
         dotnet-quality: ${{ env.DOTNET_SDK_QUALITY }}
@@ -306,7 +306,7 @@ jobs:
         fetch-depth: 0
         persist-credentials: false
 
-    - uses: actions/setup-dotnet@v5
+    - uses: actions/setup-dotnet@v6
       with:
         dotnet-version: ${{ env.DOTNET_SDK_VERSION }}
         dotnet-quality: ${{ env.DOTNET_SDK_QUALITY }}

.github/workflows/codeql-analysis.yml

@@ -35,7 +35,7 @@ jobs:
       with:
         languages: ${{ matrix.language }}
 
-    - uses: actions/setup-dotnet@v5
+    - uses: actions/setup-dotnet@v6
       with:
         dotnet-version: '11.0.x'
         dotnet-quality: 'preview'