Deprecate curly brace syntax for accessing array elements

Added fix which fix this deprecation

Reviewing it

Indeed the use of curly braces {} for array or object access, which has been deprecated in PHP 7.4 and removed entirely in PHP 8.0.
so for the same moving it to RTBC

Hello @dhruv.mittal, thanks for reviewing. Will you merge this fix? https://git.drupalcode.org/project/views_php/-/merge_requests/9

No one is maintaining this module. It has never had a release for Drupal 8 or later. Someone would need to step forward to be the maintainer. I advise against it. It is better to use Views plugins / field formatters.