chore(deps): update actions/upload-artifact action to v6 (#7)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

.github/actions/lint-syft/action.yml

@@ -12,7 +12,7 @@ runs:
         echo "SBOM generated: syft-sbom.json"
 
     - name: Upload SBOM artifact
-      uses: actions/upload-artifact@v4
+      uses: actions/upload-artifact@v6
       with:
         name: syft-sbom
         path: syft-sbom.json

.github/actions/lint-trivy/action.yml

@@ -17,7 +17,7 @@ runs:
         trivy fs . --format cyclonedx --output trivy-sbom.json
 
     - name: Upload SBOM artifact
-      uses: actions/upload-artifact@v4
+      uses: actions/upload-artifact@v6
       with:
         name: trivy-sbom
         path: trivy-sbom.json