Add PHP 8 support

tests/ZipStreamOpenTest.php

@@ -36,13 +36,13 @@ class ZipStreamOpenTest extends TestCase
         }
 
         if ($exceptionClass !== null) {
-            $this->setExpectedException(
+            $this->expectException(
                 $exceptionClass,
                 $exceptionMessage
             );
         }
 
-        static::assertInternalType('resource', $resource);
+        static::assertIsResource($resource);
 
         $zipFile = new ZipFile();
         $zipFile->openFromStream($resource);