Bump actions/upload-artifact from 5 to 7

Bumps [actions/upload-artifact](https://github.com/actions/upload-artifact) from 5 to 7.
- [Release notes](https://github.com/actions/upload-artifact/releases)
- [Commits](https://github.com/actions/upload-artifact/compare/v5...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>

.github/workflows/desktop-artifacts.yml

@@ -54,7 +54,7 @@ jobs:
         run: pnpm exec electron-builder --mac dmg zip --publish never --config.mac.identity=null --config.mac.notarize=false
 
       - name: Upload desktop artifacts
-        uses: actions/upload-artifact@v5
+        uses: actions/upload-artifact@v7
         with:
           name: veritas-kanban-mac-unsigned
           path: |

.github/workflows/scheduled-qa.yml

@@ -60,7 +60,7 @@ jobs:
 
       - name: Upload Playwright artifacts
         if: always()
-        uses: actions/upload-artifact@v5
+        uses: actions/upload-artifact@v7
         with:
           name: playwright-artifacts
           path: |
@@ -150,7 +150,7 @@ jobs:
 
       - name: Upload k6 artifacts
         if: always()
-        uses: actions/upload-artifact@v5
+        uses: actions/upload-artifact@v7
         with:
           name: k6-artifacts
           path: |