build(deps): bump actions/setup-dotnet from 5.3.0 to 6.0.0

Bumps [actions/setup-dotnet](https://github.com/actions/setup-dotnet) from 5.3.0 to 6.0.0.
- [Release notes](https://github.com/actions/setup-dotnet/releases)
- [Commits](actions/setup-dotnet@v5.3.0...v6.0.0)

---
updated-dependencies:
- dependency-name: actions/setup-dotnet
  dependency-version: 6.0.0
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

Author: dependabot[bot]

.github/workflows/pr_validation.yml

@@ -29,7 +29,7 @@ jobs:
           fetch-depth: 0
 
       - name: "Install .NET SDK"
-        uses: actions/setup-dotnet@v5.3.0
+        uses: actions/setup-dotnet@v6.0.0
         with:
           global-json-file: "./global.json"
 

.github/workflows/publish_nuget.yml

@@ -43,7 +43,7 @@ jobs:
           fetch-depth: 0
 
       - name: "Install .NET SDK"
-        uses: actions/setup-dotnet@v5.3.0
+        uses: actions/setup-dotnet@v6.0.0
         with:
           global-json-file: "./global.json"