Update CI matrix

Author: markstory

.github/workflows/ci.yml

@@ -15,13 +15,13 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        php-version: ['7.2', '8.0']
+        php-version: ['7.4', '8.0']
         db-type: [mysql, pgsql, sqlite]
         prefer-lowest: ['']
         include:
           - php-version: '8.1'
             db-type: 'sqlite'
-          - php-version: '7.2'
+          - php-version: '7.4'
             db-type: 'sqlite'
             prefer-lowest: 'prefer-lowest'