fix: tests run by sqlite

Author: shahghasiadil

phpunit.xml

@@ -25,6 +25,7 @@
         <env name="APP_MAINTENANCE_DRIVER" value="file"/>
         <env name="BCRYPT_ROUNDS" value="4"/>
         <env name="CACHE_STORE" value="array"/>
+        <env name="DB_CONNECTION" value="sqlite"/>
         <env name="DB_DATABASE" value=":memory:"/>
         <env name="MAIL_MAILER" value="array"/>
         <env name="PULSE_ENABLED" value="false"/>