fix(FloatingCTA): raise floating cta's bottom position

this is due to a collision happening in production where the cookies panel is added by v18

Author: jeff-arn

views/FloatingCta.jsx

@@ -5,7 +5,7 @@ import { StyleSheet, css } from 'aphrodite/no-important';
 const styles = StyleSheet.create({
  container: {
  position: 'fixed',
- bottom: '2rem',
+ bottom: '4rem',
  right: '2rem',
  paddingRight: '3em',
  paddingLeft: '3em',