Bump actions/upload-artifact from 4.3.3 to 4.3.6

Bumps [actions/upload-artifact](https://github.com/actions/upload-artifact) from 4.3.3 to 4.3.6.
- [Release notes](https://github.com/actions/upload-artifact/releases)
- [Commits](actions/upload-artifact@v4.3.3...v4.3.6)

---
updated-dependencies:
- dependency-name: actions/upload-artifact
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <[email protected]>

.github/workflows/back-end.yml

@@ -112,7 +112,7 @@ jobs:
         -
             name: "Tests have failed: upload logs"
             if: "${{ failure() }}"
-            uses: "actions/[email protected].3"
+            uses: "actions/[email protected].6"
             with:
                 path: "storage/logs/"
                 # Prefix with project name (github.repository contains a slash)