allow doctrine/lexer 1.1

Author: Simon Mönch

composer.json

@@ -21,7 +21,7 @@
         "coduo/php-to-string": "^2",
         "symfony/property-access": "^2.3|^3.0|^4.0",
         "symfony/expression-language": "^2.3|^3.0|^4.0",
-        "doctrine/lexer": "1.0.*",
+        "doctrine/lexer": "^1.0",
         "openlss/lib-array2xml": "^1.0"
     },
     "require-dev": {