Revert XML attribute changes and try silence operator

Both PHPUnit 10 + 11 fail with a syntax error "unexpected token @", exit code 255.

Author: jrfnl

phpunit.xml.dist

@@ -21,7 +21,7 @@
         </testsuite>
     </testsuites>
 
-    <source ignoreSelfDeprecations="true" ignoreDirectDeprecations="true" ignoreIndirectDeprecations="true">
+    <source>
         <include>
             <directory suffix=".php">./src/</directory>
         </include>

tests/FooTest.php

@@ -7,7 +7,7 @@
 use PHPUnit\Framework\Attributes\CoversClass;
 use PHPUnit\Framework\TestCase;
 
-#[CoversClass(Foo::class)]
+#[@CoversClass(Foo::class)]
 final class FooTest extends TestCase
 {
     use Foo;