Fix build

Author: ondrejmirtes

phpstan-baseline.neon

@@ -711,6 +711,11 @@ parameters:
 			count: 1
 			path: src/Testing/PHPStanTestCase.php
 
+		-
+			message: "#^Doing instanceof PHPStan\\\\Type\\\\ConstantScalarType is error\\-prone and deprecated\\. Use Type\\:\\:isConstantScalarValue\\(\\) or Type\\:\\:getConstantScalarTypes\\(\\) or Type\\:\\:getConstantScalarValues\\(\\) instead\\.$#"
+			count: 2
+			path: src/Testing/TypeInferenceTestCase.php
+
 		-
 			message: "#^Doing instanceof PHPStan\\\\Type\\\\IntersectionType is error\\-prone and deprecated\\.$#"
 			count: 1