N°3091 Update PHPUnit to 8.5 : fix setUp and teardDown methods signatures

"Return type declaration must be compatible with parent"
See https://phpunit.de/announcements/phpunit-8.html "Return Type of Template Methods"

Author: piRGoif

test/HTMLDOMSanitizerTest.php

@@ -33,11 +33,11 @@
  */
 class HTMLDOMSanitizerTest extends ItopTestCase
 {
-	public function setUp()
+	public function setUp(): void
 	{
 		parent::setUp();
 
-		require_once(APPROOT . 'env-production/combodo-email-synchro/classes/rawemailmessage.class.inc.php');
+		require_once(APPROOT.'env-production/combodo-email-synchro/classes/rawemailmessage.class.inc.php');
 	}
 
 

test/TestEmlFiles.php

@@ -20,7 +20,7 @@
 class TestEmlFiles extends ItopTestCase
 {
 
-	public function setUp()
+	public function setUp(): void
 	{
 		parent::setUp();
 

test/classes/RawEmailMessageTest.php

@@ -11,7 +11,7 @@
 
 class RawEmailMessageTest extends ItopTestCase
 {
-	public function setUp()
+	public function setUp(): void
 	{
 		parent::setUp();