Replace MockBuilder by the createPartialMock method

This resolves the following error when running the test suite using PHPUnit 10:

    Call to undefined method PHPUnit\Framework\MockObject\MockBuilder::setMethods()

tests/Constraint/ConstraintTest.php

@@ -378,18 +378,11 @@ public function testInverseMatchingOtherConstraints()
     {
         $constraint = new Constraint('>', '1.0.0');
 
-        $multiConstraint = $this
-            ->getMockBuilder('Composer\Semver\Constraint\MultiConstraint')
-            ->disableOriginalConstructor()
-            ->setMethods(array('matches'))
-            ->getMock()
-        ;
-
-        $matchAllConstraint = $this
-            ->getMockBuilder('Composer\Semver\Constraint\MatchAllConstraint')
-            ->setMethods(array('matches'))
-            ->getMock()
-        ;
+        $multiConstraint =
+            $this->createPartialMock('Composer\Semver\Constraint\MultiConstraint', array('matches'));
+
+        $matchAllConstraint =
+            $this->createPartialMock('Composer\Semver\Constraint\MatchAllConstraint', array('matches'));
 
         foreach (array($multiConstraint, $matchAllConstraint) as $mock) {
             $mock
@@ -400,9 +393,7 @@ public function testInverseMatchingOtherConstraints()
             ;
         }
 
-        // @phpstan-ignore-next-line
         $this->assertTrue($constraint->matches($multiConstraint));
-        // @phpstan-ignore-next-line
         $this->assertTrue($constraint->matches($matchAllConstraint));
     }