Change node runtime versions on CircleCI

Signed-off-by: moznion <moznion@mail.moznion.net>

Author: moznion

.circleci/config.yml

@@ -28,20 +28,20 @@ commands:
             - ~/.npm/_cacache
 
 jobs:
-  node-v10:
+  node-v12:
     docker:
-      - image: node:10
+      - image: node:12
     steps:
       - test-nodejs
-  node-v12:
+  node-v14:
     docker:
-      - image: node:12
+      - image: node:14
     steps:
       - test-nodejs
 
 workflows:
   node-multi-build:
     jobs:
-      - node-v10
       - node-v12
+      - node-v14