ci: bump actions/upload-artifact from 6 to 7 (#51)

Bumps [actions/upload-artifact](https://github.com/actions/upload-artifact) from 6 to 7.
- [Release notes](https://github.com/actions/upload-artifact/releases)
- [Commits](actions/upload-artifact@v6...v7)

---
updated-dependencies:
- dependency-name: actions/upload-artifact
  dependency-version: '7'
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

.github/workflows/build-linux.yml

@@ -130,14 +130,14 @@ jobs:
         tar -czf Argus-Overview-${{ steps.version.outputs.version }}-Linux.tar.gz argus-overview-linux
 
     - name: Upload AppImage artifact
-      uses: actions/upload-artifact@v6
+      uses: actions/upload-artifact@v7
       with:
         name: Argus-Overview-AppImage
         path: Argus-Overview-*.AppImage
         retention-days: 30
 
     - name: Upload tarball artifact
-      uses: actions/upload-artifact@v6
+      uses: actions/upload-artifact@v7
       with:
         name: Argus-Overview-Linux-tarball
         path: Argus-Overview-*-Linux.tar.gz

.github/workflows/build-windows.yml

@@ -75,7 +75,7 @@ jobs:
         7z a Argus-Overview-${{ steps.version.outputs.version }}-Windows.zip Argus-Overview.exe
 
     - name: Upload artifact
-      uses: actions/upload-artifact@v6
+      uses: actions/upload-artifact@v7
       with:
         name: Argus-Overview-Windows
         path: dist/Argus-Overview-*.zip