ci: bump actions/upload-artifact from 4 to 5 (#827)

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

.github/workflows/build-pypi.yml

@@ -103,7 +103,7 @@ jobs:
 
       - name: Upload to artifact
         if: always()
-        uses: actions/upload-artifact@v4
+        uses: actions/upload-artifact@v5
         with:
           name: Dist
           path: dist/

.github/workflows/gitleaks.yml

@@ -63,7 +63,7 @@ jobs:
 
       - name: Upload test results
         if: failure()
-        uses: actions/upload-artifact@v4
+        uses: actions/upload-artifact@v5
         with:
           name: GitLeaks results
           path: results.sarif