ci: use next-gen images

Author: mpushkin

.circleci/config.yml

@@ -4,7 +4,7 @@ jobs:
   test_without_db:
     working_directory: ~/repo
     docker:
-      - image: circleci/node:14-browsers
+      - image: cimg/node:14-browsers
 
     steps:
       - checkout
@@ -14,8 +14,8 @@ jobs:
   test_with_db:
     working_directory: ~/repo
     docker:
-      - image: circleci/node:14-browsers
-      - image: circleci/dynamodb:oracle
+      - image: cimg/node:14-browsers
+      - image: dynamo
 
     steps:
       - checkout