Update build & release scripts

Author: Havret

.github/workflows/build.yml

@@ -16,7 +16,7 @@ jobs:
       - name: Setup .NET Core
         uses: actions/setup-dotnet@v1
         with:
-          dotnet-version: "8.0.x"
+          dotnet-version: "9.x"
       - name: Build with dotnet
         run: dotnet build --configuration Release
       - name: Test with dotnet
@@ -28,7 +28,7 @@ jobs:
       - name: Setup .NET Core
         uses: actions/setup-dotnet@v1
         with:
-          dotnet-version: "8.0.x"
+          dotnet-version: "9.x"
       - name: Build with dotnet
         run: dotnet build --configuration Release
       - name: Test with dotnet

.github/workflows/release.yml

@@ -14,22 +14,22 @@ jobs:
             Protobuf.System.Text.Json
           ]
     steps:
-      - uses: actions/checkout@v1
+      - uses: actions/checkout@v2 # Updated to v2 for better performance and new features
       - name: Setup .NET Core
         uses: actions/setup-dotnet@v1
         with:
-          dotnet-version: "8.0.x"
+          dotnet-version: "9.x"
       - name: Create NuGet Package
         run: dotnet pack -c Release /p:Version=${{ github.event.release.name }} /p:PackageReleaseNotes="See https://github.com/Havret/Protobuf.System.Text.Json/releases/tag/${{ github.event.release.tag_name }}"
       - name: Archive NuGet Package
-        uses: actions/upload-artifact@v1
+        uses: actions/upload-artifact@v4 # Migrated to v4
         with:
           name: ${{ matrix.package }}
           path: ./src/${{ matrix.package }}/bin/Release/${{ matrix.package }}.${{ github.event.release.name }}.nupkg
       - name: Archive NuGet Package With Symbols
-        uses: actions/upload-artifact@v1
+        uses: actions/upload-artifact@v4 # Migrated to v4
         with:
-          name: ${{ matrix.package }}
+          name: ${{ matrix.package }}-symbols
           path: ./src/${{ matrix.package }}/bin/Release/${{ matrix.package }}.${{ github.event.release.name }}.snupkg
       - name: Publish NuGet Package
         run: dotnet nuget push ./src/${{ matrix.package }}/bin/Release/${{ matrix.package }}.${{ github.event.release.name }}.nupkg --api-key ${{ secrets.nuget_api_key }} --source https://api.nuget.org/v3/index.json