Roll several versions on CI

For CI,

- Upgrade DB versions to the latest LTS, and
- Upgrade workflow versions to be up-to-date

Author: nekketsuuu

.github/workflows/main.yml

@@ -10,22 +10,24 @@ jobs:
     name: Run test
     services:
       postgres:
-        image: circleci/postgres:10.6-alpine
+        image: postgres:16
         ports: ["5432:5432"]
         env:
           POSTGRES_USER: postgres
           POSTGRES_DB: dmemo_test
+          POSTGRES_HOST_AUTH_METHOD: trust
       mysql:
-        image: circleci/mysql:5.6
+        image: mysql:8.4
         ports: ["3306:3306"]
         env:
           MYSQL_DATABASE: dmemo_test
+          MYSQL_ALLOW_EMPTY_PASSWORD: 'yes'
     env:
       PG_HOST: localhost
       RAILS_ENV: test
     steps:
-    - uses: actions/checkout@v2
-    - uses: actions/setup-node@v2
+    - uses: actions/checkout@v4
+    - uses: actions/setup-node@v4
       with:
         node-version: '20'
         cache: 'npm'