Update to PHPUnit 8.5 (#15581)

* use latest phpunit/phpunit ~8.5

* submodule updates

* fixes

2 files changed, 3 insertions, 3 deletions

diff --git a/plugins/VisitsSummary/tests/Integration/VisitsSummaryTest.php b/plugins/VisitsSummary/tests/Integration/VisitsSummaryTest.php
index 221f48daa0..2c30400730 100644
--- a/plugins/VisitsSummary/tests/Integration/VisitsSummaryTest.php
+++ b/plugins/VisitsSummary/tests/Integration/VisitsSummaryTest.php
@@ -31,7 +31,7 @@ class VisitsSummaryTest extends IntegrationTestCase
     protected $date = '2014-04-04';
     private $column = 'nb_users';
 
-    public function setUp()
+    public function setUp(): void
     {
         parent::setUp();
         $this->plugin = new VisitsSummary();
@@ -42,7 +42,7 @@ class VisitsSummaryTest extends IntegrationTestCase
         Fixture::createWebsite('2014-01-01 00:00:00');
     }
 
-    public function tearDown()
+    public function tearDown(): void
     {
         // clean up your test here if needed
         $tables = ArchiveTableCreator::getTablesArchivesInstalled();
diff --git a/plugins/VisitsSummary/tests/Unit/Reports/GetTest.php b/plugins/VisitsSummary/tests/Unit/Reports/GetTest.php
index 8831ca7146..c89efdf689 100644
--- a/plugins/VisitsSummary/tests/Unit/Reports/GetTest.php
+++ b/plugins/VisitsSummary/tests/Unit/Reports/GetTest.php
@@ -26,7 +26,7 @@ class GetTest extends \PHPUnit\Framework\TestCase
 
     private $column = 'nb_users';
 
-    public function setUp()
+    public function setUp(): void
     {
         parent::setUp();
         $this->get = new Get();