Bump actions/upload-artifact from 3 to 4

Bumps [actions/upload-artifact](https://github.com/actions/upload-artifact) from 3 to 4.
- [Release notes](https://github.com/actions/upload-artifact/releases)
- [Commits](actions/upload-artifact@v3...v4)

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

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

.github/workflows/steamkit2-build.yaml

@@ -75,7 +75,7 @@ jobs:
       run: dotnet pack --configuration Release SteamKit2/SteamKit2/SteamKit2.csproj
 
     - name: Upload NuGet Package
-      uses: actions/upload-artifact@v3
+      uses: actions/upload-artifact@v4
       with:
         name: SteamKit2.nupkg
         path: 'SteamKit2/SteamKit2/bin/Release/*.nupkg'
@@ -99,7 +99,7 @@ jobs:
       run: dotnet publish --configuration Release --runtime win-x64 --self-contained Resources/NetHookAnalyzer2/NetHookAnalyzer2/NetHookAnalyzer2.csproj /p:PublishSingleFile=True
 
     - name: Upload NetHookAnalyzer2
-      uses: actions/upload-artifact@v3
+      uses: actions/upload-artifact@v4
       with:
         name: NetHookAnalyzer2
         path: 'Resources/NetHookAnalyzer2/NetHookAnalyzer2/bin/Release/win-x64/publish/*'
@@ -137,7 +137,7 @@ jobs:
       run: msbuild /p:Configuration=${{ matrix.configuration }} /p:Platform=${{ matrix.platform }} Resources/NetHook2/NetHook2.sln
 
     - name: Upload NetHook2
-      uses: actions/upload-artifact@v3
+      uses: actions/upload-artifact@v4
       if: matrix.configuration == 'Release'
       with:
         name: NetHook2-${{ matrix.platform }}

.github/workflows/steamkit2-release.yaml

@@ -28,7 +28,7 @@ jobs:
       run: dotnet pack --configuration Release SteamKit2/SteamKit2/SteamKit2.csproj /p:Version=${{ github.event.release.tag_name }}
 
     - name: Upload NuGet Package as Artifact
-      uses: actions/upload-artifact@v3
+      uses: actions/upload-artifact@v4
       with:
         name: SteamKit2-${{ github.event.release.tag_name }}.nupkg
         path: 'SteamKit2/SteamKit2/bin/Release/SteamKit2.${{ github.event.release.tag_name }}.nupkg'