test: Fix PHPUnit deprecations

Author: mbaumgartl

tests/ExceptionTest.php

@@ -40,10 +40,7 @@ public function testRequestExceptions(string $exceptionClass, string $message, R
         $client->execute(['resource' => 'user', 'id' => 1337]);
     }
 
-    /**
-     * @param string $exceptionClass
-     * @dataProvider exceptionClassDataProvider
-     */
+    #[PHPUnit\Framework\Attributes\DataProvider('exceptionClassDataProvider')]
     public function testExceptionBaseClass(string $exceptionClass): void
     {
         self::assertInstanceOf(FloraException::class, new $exceptionClass());

tests/ParameterTest.php

@@ -148,10 +148,7 @@ public function testOverwriteDefaultParameter(): void
         self::assertStringContainsString('portalId=4711', $request->getUri()->getQuery());
     }
 
-    /**
-     * @param string $param
-     * @dataProvider forceGetParamProvider
-     */
+    #[PHPUnit\Framework\Attributes\DataProvider('forceGetParamProvider')]
     public function testDefaultGetParameters(string $param): void
     {
         $response = ResponseFactory::create()