build(deps): bump actions/upload-artifact from 3 to 4

Bumps [actions/upload-artifact](https://github.com/actions/upload-artifact) from 3 to 4.
- [Release notes](https://github.com/actions/upload-artifact/releases)
- [Commits](actions/upload-artifact@v3...v4)

---
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/check-docs.yml

@@ -104,7 +104,7 @@ jobs:
         if: startsWith(github.event_name, 'pull_request')
         run: echo "KEEP_DAYS=7" >> $GITHUB_ENV
       - name: Upload built docs
-        uses: actions/upload-artifact@v3
+        uses: actions/upload-artifact@v4
         with:
           name: docs-${{ matrix.target }}-${{ github.sha }}
           path: ${{ inputs.docs-dir }}/build/

.github/workflows/check-package.yml

@@ -64,7 +64,7 @@ jobs:
           submodules: recursive
       - run: mkdir dist && touch dist/.placeholder
       - name: Upload 📤
-        uses: actions/upload-artifact@v3
+        uses: actions/upload-artifact@v4
         with:
           name: ${{ inputs.artifact-name }}
           path: dist

.github/workflows/release-pypi.yml

@@ -30,7 +30,7 @@ jobs:
       - name: Create 📦 package
         uses: ./.github/actions/pkg-create
       - name: Upload 📤 to the share store
-        uses: actions/upload-artifact@v3
+        uses: actions/upload-artifact@v4
         with:
           name: pypi-packages-${{ github.sha }}
           path: dist