ci: bump actions/upload-artifact from 6 to 7 (#774)

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_pypi.yml

@@ -110,7 +110,7 @@ jobs:
 
       - name: Upload to artifact
         if: always()
-        uses: actions/upload-artifact@v6
+        uses: actions/upload-artifact@v7
         with:
           name: Dist
           path: dist/

.github/workflows/gitleaks.yml

@@ -77,7 +77,7 @@ jobs:
 
       - name: Upload test results
         if: failure()
-        uses: actions/upload-artifact@v6
+        uses: actions/upload-artifact@v7
         with:
           name: GitLeaks results
           path: results.sarif