ci: switch to the new release pipeline

1. Discuss and merge PR as usual
2. After PR is merged, a new release PR is created automatically, with
   CHANGELOG.md and version updated according to conventional commit
   spec.
3. Drop preview.yml workflow since it is no longer needed - now the
   release PR and CHANGELOG.md can be reviewed before merging.

.github/workflows/release.yml

@@ -0,0 +1,14 @@
+on:
+  push:
+    branches: [master]
+
+name: release
+
+jobs:
+  release:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: yandex-cloud/ui-release-action@master
+        with:
+          github-token: ${{ secrets.BOT_TOKEN }}
+          npm-token: ${{ secrets.NODE_AUTH_TOKEN }}

.github/workflows/test.yml

@@ -41,6 +41,6 @@ jobs:
     - name: Build examples
       run: npm run build:examples
     - name: Run tests
-      run: npm run test
+      run: npm run test:all
       env:
         YDB_SSL_ROOT_CERTIFICATES_FILE: /tmp/ydb_certs/ca.pem