Merge pull request #854 from c-bata/bump-to-v0.15.1

Bump the version up to `v0.15.1`

.github/workflows/github-release.yml

@@ -15,9 +15,13 @@ jobs:
       - name: Setup Node
         uses: actions/setup-node@v2
         with:
-          node-version: '16'
-      - run: npm install
-      - run: npm run build:prd
+          node-version: '20'
+    
+      - name: Build bundle.js
+        working-directory: optuna_dashboard
+        run: |
+          npm install
+          npm run build:prd
 
       - name: Set up Python
         uses: actions/setup-python@v4

.github/workflows/pypi-publish.yml

@@ -17,7 +17,7 @@ jobs:
     - name: Setup Node
       uses: actions/setup-node@v2
       with:
-        node-version: '16'
+        node-version: '20'
     
     - name: Build bundle.js
       working-directory: optuna_dashboard

optuna_dashboard/__init__.py

@@ -17,4 +17,4 @@ from ._note import save_note  # noqa
 from ._preference_setting import register_preference_feedback_component  # noqa
 
 
-__version__ = "0.15.0"
+__version__ = "0.15.1"