Bump actions/upload-artifact from 4 to 7

Bumps [actions/upload-artifact](https://github.com/actions/upload-artifact) from 4 to 7.
- [Release notes](https://github.com/actions/upload-artifact/releases)
- [Commits](actions/upload-artifact@v4...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>

Author: dependabot[bot]

.github/workflows/verify.yml

@@ -89,7 +89,7 @@ jobs:
             -DdataDirectory="$RUNNER_TEMP/dependency-check-data" \
             -DossindexAnalyzerEnabled=false
       - if: always()
-        uses: actions/upload-artifact@v4
+        uses: actions/upload-artifact@v7
         with:
           name: backend-dependency-check
           path: backend/target/dependency-check-report.*
@@ -161,7 +161,7 @@ jobs:
       - run: npm run test:parity:oracle
       - run: npm run test:parity:campaign
       - if: always()
-        uses: actions/upload-artifact@v4
+        uses: actions/upload-artifact@v7
         with:
           name: parity-smoke
           path: ${{ github.workspace }}/parity-smoke.json
@@ -199,7 +199,7 @@ jobs:
       - run: npm run test:parity:campaign
       - run: npm run parity:report
       - if: always()
-        uses: actions/upload-artifact@v4
+        uses: actions/upload-artifact@v7
         with:
           name: parity-campaign
           path: |
@@ -266,7 +266,7 @@ jobs:
           severity: HIGH,CRITICAL
           exit-code: "1"
       - if: always()
-        uses: actions/upload-artifact@v4
+        uses: actions/upload-artifact@v7
         with:
           name: production-browser-and-image-evidence
           path: |