Bump actions/upload-artifact from 5 to 6

Bumps [actions/upload-artifact](https://github.com/actions/upload-artifact) from 5 to 6.
- [Release notes](https://github.com/actions/upload-artifact/releases)
- [Commits](actions/upload-artifact@v5...v6)

---
updated-dependencies:
- dependency-name: actions/upload-artifact
  dependency-version: '6'
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

Author: dependabot[bot]

.github/workflows/steamkit2-build.yaml

@@ -79,7 +79,7 @@ jobs:
       run: dotnet pack --configuration Release SteamKit2/SteamKit2/SteamKit2.csproj
 
     - name: Upload NuGet Package
-      uses: actions/upload-artifact@v5
+      uses: actions/upload-artifact@v6
       with:
         name: SteamKit2.nupkg
         path: 'SteamKit2/SteamKit2/bin/Release/*.nupkg'
@@ -104,7 +104,7 @@ 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@v5
+      uses: actions/upload-artifact@v6
       with:
         name: NetHookAnalyzer2
         path: 'Resources/NetHookAnalyzer2/NetHookAnalyzer2/bin/Release/win-x64/publish/*'
@@ -148,7 +148,7 @@ jobs:
       run: msbuild /p:Configuration=${{ matrix.configuration }} /p:Platform=${{ matrix.platform }} Resources/NetHook2/NetHook2.sln
 
     - name: Upload NetHook2
-      uses: actions/upload-artifact@v5
+      uses: actions/upload-artifact@v6
       if: matrix.configuration == 'Release'
       with:
         name: NetHook2-${{ matrix.platform }}

.github/workflows/steamkit2-release.yaml

@@ -26,7 +26,7 @@ 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@v5
+      uses: actions/upload-artifact@v6
       with:
         name: SteamKit2-${{ github.event.release.tag_name }}.nupkg
         path: 'SteamKit2/SteamKit2/bin/Release/SteamKit2.${{ github.event.release.tag_name }}.nupkg'