Bump actions/setup-dotnet from 1 to 4

Bumps [actions/setup-dotnet](https://github.com/actions/setup-dotnet) from 1 to 4.
- [Release notes](https://github.com/actions/setup-dotnet/releases)
- [Commits](actions/setup-dotnet@v1...v4)

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

Signed-off-by: dependabot[bot] <[email protected]>

.github/workflows/pr_validation.yml

@@ -36,10 +36,10 @@ jobs:
         run: chmod +x ./build.sh
       - name: Make build.cmd executable
         run: chmod +x ./build.cmd
-      - uses: actions/setup-dotnet@v1
+      - uses: actions/setup-dotnet@v4
         with:
           dotnet-version: 6.0.*
-      - uses: actions/setup-dotnet@v1
+      - uses: actions/setup-dotnet@v4
         with:
           dotnet-version: 8.0.*
       - name: Cache .nuke/temp, ~/.nuget/packages
@@ -62,10 +62,10 @@ jobs:
         run: chmod +x ./build.sh
       - name: Make build.cmd executable
         run: chmod +x ./build.cmd
-      - uses: actions/setup-dotnet@v1
+      - uses: actions/setup-dotnet@v4
         with:
           dotnet-version: 6.0.*
-      - uses: actions/setup-dotnet@v1
+      - uses: actions/setup-dotnet@v4
         with:
           dotnet-version: 8.0.*
       - name: Cache .nuke/temp, ~/.nuget/packages