🔨️ (deps): Bump actions/upload-artifact from 2 to 3

Bumps [actions/upload-artifact](https://github.com/actions/upload-artifact) from 2 to 3.
- [Release notes](https://github.com/actions/upload-artifact/releases)
- [Commits](https://github.com/actions/upload-artifact/compare/v2...v3)

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

Signed-off-by: dependabot[bot] <support@github.com>

.github/workflows/stefflow.yml

@@ -83,7 +83,7 @@ jobs:
           pytest --verbose --cov=. --cov-report=html
 
       - name: "⬆️ Upload coverage"
-        uses: actions/upload-artifact@v2
+        uses: actions/upload-artifact@v3
         with:
           name: "code-coverage-report"
           path: htmlcov
@@ -110,13 +110,13 @@ jobs:
         run: poetry build --no-interaction
 
       - name: "⬆️ Upload code package as artifact"
-        uses: actions/upload-artifact@v2
+        uses: actions/upload-artifact@v3
         with:
           name: "package.tar.gz"
           path: dist/*.tar.gz
 
       - name: "⬆️ Upload wheel package as artifact"
-        uses: actions/upload-artifact@v2
+        uses: actions/upload-artifact@v3
         with:
           name: "package.whl"
           path: dist/*.whl
@@ -153,7 +153,7 @@ jobs:
           make html
 
       - name: "⬆️ Upload docs artifact"
-        uses: actions/upload-artifact@v2.3.1
+        uses: actions/upload-artifact@v3
         with:
           name: "documentation"
           path: "docs/build/html/"