Remove slash before the "node_modules" string in "Require cycle" warn message regex
Remove slash before the "node_modules" string in "Require cycle" warn message regex

Previous regex doesn't match any of "Require cycle" warns as they all contain not absolute warned modules path, but relative to project directory and without starting slash. 

Example warn message "Require cycle: node_modules/react-native-gesture-handler/GestureHandler.js -> node_modules/react-native-gesture-handler/Swipeable.js -> node_modules/react-native-gesture-handler/GestureHandler.js"
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