Bump actions/upload-artifact and download-artifact from 3 to 4. (#1160)

Co-authored-by: dependabot[bot].

.github/workflows/ci.yml

@@ -264,7 +264,7 @@ jobs:
           dotnet pack Src --configuration=Release @params
 
       - name: Upload NuGet package artifacts
-        uses: actions/upload-artifact@v3
+        uses: actions/upload-artifact@v4
         with:
           name: nuget-packages
           path: ./Bin/Release/ILGPU*.${{ needs.check-version.outputs.version }}.*nupkg
@@ -297,7 +297,7 @@ jobs:
 
       # Verify that the sample projects can compile after switching to NuGet references
       - name: Download NuGet package artifact
-        uses: actions/download-artifact@v3
+        uses: actions/download-artifact@v4
         with:
           name: nuget-packages
           path: local-nuget-packages
@@ -323,7 +323,7 @@ jobs:
 
       # Upload samples artifact (for version tags and master branch only)
       - name: Upload Samples artifact
-        uses: actions/upload-artifact@v3
+        uses: actions/upload-artifact@v4
         if: github.event_name == 'push' && !github.event.repository.fork && (github.ref == 'refs/heads/master' || startsWith(github.ref, 'refs/tags/v'))
         with:
           name: samples
@@ -353,7 +353,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Download NuGet package artifact
-        uses: actions/download-artifact@v3
+        uses: actions/download-artifact@v4
         with:
           name: nuget-packages
       - name: Publish to FeedzIO
@@ -371,11 +371,11 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Download NuGet package artifact
-        uses: actions/download-artifact@v3
+        uses: actions/download-artifact@v4
         with:
           name: nuget-packages
       - name: Download Samples artifact
-        uses: actions/download-artifact@v3
+        uses: actions/download-artifact@v4
         with:
           name: samples