ci: Adjust database versions to current LTS / supported versions

* MySQL tests
  * Minimum 8.0 (LTS)
  * Maximum 8.4 (LTS)
  * Drop 8.3 as we now test 8.4 and 8.3 was never LTS
* MariaDB tests
  * still supported version 10.3 (no LTS but for Ubuntu 20.04 support)
  * LTS 10.6
  * LTS 10.11
  * LTS 11.4
  * Drop 10.5 is was never LTS and we test 10.3 and 10.6

Signed-off-by: Ferdinand Thiessen <opensource@fthiessen.de>

.github/workflows/phpunit-mariadb.yml

@@ -56,10 +56,10 @@ jobs:
     strategy:
       matrix:
         php-versions: ['8.1']
-        mariadb-versions: ['10.3', '10.5', '10.6', '10.11']
+        mariadb-versions: ['10.3', '10.6', '10.11', '11.4']
         include:
           - php-versions: '8.3'
-            mariadb-versions: '10.6'
+            mariadb-versions: '10.11'
             coverage: ${{ github.event_name != 'pull_request' }}
 
     name: MariaDB ${{ matrix.mariadb-versions }} (PHP ${{ matrix.php-versions }}) - database tests
@@ -80,7 +80,7 @@ jobs:
           MYSQL_USER: oc_autotest
           MYSQL_PASSWORD: nextcloud
           MYSQL_DATABASE: oc_autotest
-        options: --health-cmd="mysqladmin ping" --health-interval 5s --health-timeout 2s --health-retries 5
+        options: --health-cmd="mariadb-admin ping" --health-interval 5s --health-timeout 2s --health-retries 5
 
     steps:
       - name: Checkout server

.github/workflows/phpunit-mysql.yml

@@ -56,7 +56,7 @@ jobs:
     strategy:
       matrix:
         php-versions: ['8.1']
-        mysql-versions: ['8.0', '8.3']
+        mysql-versions: ['8.0', '8.4']
         include:
           - mysql-versions: '8.0'
             php-versions: '8.3'