Adjust cast and test against PHP 8.5

Author: dwightwatson

.github/workflows/test.yaml

@@ -13,6 +13,7 @@ jobs:
           - '8.2'
           - '8.3'
           - '8.4'
+          - '8.5'
     steps:
       - name: Checkout
         uses: actions/checkout@v4

src/Transformation/Expression/ExpressionUtils.php

@@ -124,6 +124,6 @@ protected static function translateIf(array $source): mixed
      */
     protected static function isLiteral(string $expression): bool
     {
-        return (boolean)preg_match('/^!.+!$/', $expression);
+        return (bool)preg_match('/^!.+!$/', $expression);
     }
 }

src/Transformation/Variable/Variable.php

@@ -169,7 +169,7 @@ public function getVariableName(): string
      */
     public static function isVariable(string $candidate): bool
     {
-        return (boolean)preg_match('/^\$[a-zA-Z]\w*$/', $candidate);
+        return (bool)preg_match('/^\$[a-zA-Z]\w*$/', $candidate);
     }
 
     /**