chore(deps): bump actions/download-artifact from 3 to 4

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

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

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

.github/workflows/release.yml

@@ -62,7 +62,7 @@ jobs:
           cache: npm
           node-version: 18
 
-      - uses: actions/download-artifact@v3
+      - uses: actions/download-artifact@v4
         with:
           name: ng2-charts
           path: dist
@@ -104,12 +104,12 @@ jobs:
         with:
           ref: 'gh-pages'
           fetch-depth: 0
-      - uses: actions/download-artifact@v3
+      - uses: actions/download-artifact@v4
         if: ${{ github.event.release.prerelease }}
         with:
           name: ng2-charts-docs
           path: next
-      - uses: actions/download-artifact@v3
+      - uses: actions/download-artifact@v4
         if: ${{ !github.event.release.prerelease }}
         with:
           name: ng2-charts-docs