ci(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] <support@github.com>

.github/workflows/main.yml

@@ -50,19 +50,19 @@ jobs:
           npm run test:example
 
       - name: Upload library build artifacts
-        uses: actions/upload-artifact@v3
+        uses: actions/upload-artifact@v4
         with:
           name: artifacts-ng-in-viewport
           path: dist/ng-in-viewport
 
       - name: Upload demo application build artifacts
-        uses: actions/upload-artifact@v3
+        uses: actions/upload-artifact@v4
         with:
           name: artifacts-demo
           path: dist/demo
 
       - name: Upload example application build artifacts
-        uses: actions/upload-artifact@v3
+        uses: actions/upload-artifact@v4
         with:
           name: artifacts-example
           path: dist/example
@@ -103,14 +103,14 @@ jobs:
           headless: true
 
       - name: Upload failed screenshots
-        uses: actions/upload-artifact@v3
+        uses: actions/upload-artifact@v4
         if: failure()
         with:
           name: failed-e2e-${{ matrix.project }}-screenshots
           path: projects/${{ matrix.project }}-e2e/artifacts/screenshots
 
       - name: Upload failed videos
-        uses: actions/upload-artifact@v3
+        uses: actions/upload-artifact@v4
         if: failure()
         with:
           name: failed-e2e-${{ matrix.project }}-videos