* [MOD] Update PHPunit to latest version.

* [MOD] Load fixtures using plain SQL files.
* [MOD] Raise PHP version requirements (7.2 will be deprecated within a month).

Signed-off-by: Rubén D <nuxsmin@syspass.org>

tests/SP/Storage/ArchiveHandlerTest.php

@@ -101,7 +101,7 @@ class ArchiveHandlerTest extends TestCase
      * Sets up the fixture, for example, open a network connection.
      * This method is called before a test is executed.
      */
-    protected function setUp()
+    protected function setUp(): void
     {
         array_map('unlink', glob(TMP_PATH . DIRECTORY_SEPARATOR . 'test_archive_*'));
     }