Bump phpunit and fix CI

Signed-off-by: Julius Härtl <jus@bitgrid.net>

tests/unit/Db/AclMapperTest.php

@@ -5,20 +5,20 @@
  * @author Julius Härtl <jus@bitgrid.net>
  *
  * @license GNU AGPL version 3 or any later version
- *  
+ *
  *  This program is free software: you can redistribute it and/or modify
  *  it under the terms of the GNU Affero General Public License as
  *  published by the Free Software Foundation, either version 3 of the
  *  License, or (at your option) any later version.
- *  
+ *
  *  This program is distributed in the hope that it will be useful,
  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  *  GNU Affero General Public License for more details.
- *  
+ *
  *  You should have received a copy of the GNU Affero General Public License
  *  along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *  
+ *
  */
 
 namespace OCA\Deck\Db;
@@ -42,7 +42,7 @@ class AclMapperTest extends MapperTestUtility  {
 	private $acls;
 	private $boards;
 
-	public function setup(){
+	public function setup(): void {
 		parent::setUp();
 
 		$this->dbConnection = \OC::$server->getDatabaseConnection();
@@ -113,7 +113,7 @@ class AclMapperTest extends MapperTestUtility  {
     }
 
 
-    public function tearDown() {
+    public function tearDown(): void {
         parent::tearDown();
         foreach ($this->acls as $acl) {
             $this->aclMapper->delete($acl);
@@ -123,4 +123,4 @@ class AclMapperTest extends MapperTestUtility  {
         }
     }
 
-}
+}