[TASK] Upgrade to PHPUnit 8.5 (#328)

Also upgrade to nimut/testing-framework 6.0.

This removes another blocker for running the tests with TYPO3 11LTS.

Fixes #326

.php_cs.php

@@ -12,6 +12,7 @@ $rules = [
     '@PHPUnit57Migration:risky' => true,
     '@PHPUnit60Migration:risky' => true,
     '@PHPUnit75Migration:risky' => true,
+    '@PHPUnit84Migration:risky' => true,
 
     'align_multiline_comment' => true,
     'array_indentation' => true,

CHANGELOG.md

@@ -9,6 +9,7 @@ This project adheres to [Semantic Versioning](https://semver.org/).
 - Allow installations on TYPO3 11LTS
 
 ### Changed
+- Upgrade to PHPUnit 8.5 (#328)
 
 ### Deprecated
 

Tests/Functional/Controller/TeaControllerTest.php

@@ -48,7 +48,7 @@ class TeaControllerTest extends FunctionalTestCase
         $responseContent = $this->getFrontendResponse(1)->getContent();
 
         $teaTitle = 'Earl Grey';
-        self::assertContains($teaTitle, $responseContent);
+        self::assertStringContainsString($teaTitle, $responseContent);
     }
 
     /**

composer.json

@@ -41,11 +41,11 @@
 		"helhum/typo3-composer-setup": "^0.5.7",
 		"helmich/typo3-typoscript-lint": "^2.5.2",
 		"jangregor/phpstan-prophecy": "^0.8.1",
-		"nimut/testing-framework": "^5.3.0",
+		"nimut/testing-framework": "^6.0.0",
 		"phpstan/extension-installer": "^1.1.0",
 		"phpstan/phpstan": "^0.12.98",
 		"phpstan/phpstan-phpunit": "^0.12.22",
-		"phpunit/phpunit": "^7.5.20",
+		"phpunit/phpunit": "^8.5.21",
 		"saschaegerer/phpstan-typo3": "^0.13.3",
 		"seld/jsonlint": "^1.8.3",
 		"squizlabs/php_codesniffer": "^3.6.1",