Update CI settings. Move mariadb up in the release cycle.

.github/workflows/moodle-ci.yml

@@ -16,7 +16,7 @@ jobs:
           - 5432:5432
         options: --health-cmd pg_isready --health-interval 10s --health-timeout 5s --health-retries 3
       mariadb:
-        image: mariadb:10
+        image: mariadb:10.6
         env:
           MYSQL_USER: 'root'
           MYSQL_ALLOW_EMPTY_PASSWORD: "true"
@@ -44,6 +44,10 @@ jobs:
             moodle-branch: 'MOODLE_402_STABLE'
             database: 'pgsql'
             maxima: 'SBCL'
+          - php: '8.1'
+            moodle-branch: 'MOODLE_402_STABLE'
+            database: 'mariadb'
+            maxima: 'SBCL'
           - php: '8.0'
             moodle-branch: 'MOODLE_402_STABLE'
             database: 'pgsql'
@@ -62,7 +66,7 @@ jobs:
             maxima: 'SBCL'
           - php: '7.2'
             moodle-branch: 'MOODLE_39_STABLE'
-            database: 'mariadb'
+            database: 'pgsql'
             maxima: 'SBCL'
 
     steps:
@@ -79,7 +83,7 @@ jobs:
           echo "build_info();" | maxima
 
       - name: Check out repository code
-        uses: actions/checkout@v2
+        uses: actions/checkout@v3
         with:
           path: plugin
 
@@ -170,8 +174,11 @@ jobs:
         if: ${{ matrix.moodle-branch == 'MOODLE_311_STABLE' }}
         run: moodle-plugin-ci grunt
 
+      - name: PHPUnit tests
+        if: ${{ always() }}
+        run: moodle-plugin-ci phpunit
+
       - name: Behat features
         if: ${{ always() }}
         run: moodle-plugin-ci behat --profile chrome
 
-