chore(deps): update actions/upload-artifact action to v7 (#740)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>
Co-authored-by: Christopher Bartz <christopher.bartz@canonical.com>

Author: renovate[bot]

.github/workflows/security_scan.yaml

@@ -54,7 +54,7 @@ jobs:
           sarif_file: "trivy-results.sarif"
 
       - name: Upload diagnostic SARIF artifact
-        uses: actions/upload-artifact@v6.0.0
+        uses: actions/upload-artifact@v7.0.0
         with:
           name: sarif-report
           path: "trivy-results.sarif"
@@ -89,7 +89,7 @@ jobs:
           github-pat: ${{ secrets.GITHUB_TOKEN }}
 
       - name: Upload SBOM as an artifact
-        uses: actions/upload-artifact@v6.0.0
+        uses: actions/upload-artifact@v7.0.0
         with:
           name: sbom
           path: "dependency-results.sbom.json"