Bump actions/upload-artifact from 3.2.1 to 4.4.2

Bumps [actions/upload-artifact](https://github.com/actions/upload-artifact) from 3.2.1 to 4.4.2.
- [Release notes](https://github.com/actions/upload-artifact/releases)
- [Commits](actions/upload-artifact@ff15f03...8448086)

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

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

.github/workflows/testing.yml

@@ -71,7 +71,7 @@ jobs:
           make test-cover
 
       - name: Upload coverage
-        uses: actions/upload-artifact@ff15f0306b3f739f7b6fd43fb5d26cd321bd4de5 # v3.2.1
+        uses: actions/upload-artifact@84480863f228bb9747b473957fcc9e309aa96097 # v4.4.2
         with:
           name: coverage-${{ matrix.os }}-${{ matrix.go }}
           path: coverage.*