Update get_process_mem to 0.2.3
This squelches a BigDecimal warning in Ruby 2.6:
warning: BigDecimal.new is deprecated; use BigDecimal() method instead.
https://github.com/schneems/get_process_mem/blob/master/CHANGELOG.md
Edited by Stan Hu
This squelches a BigDecimal warning in Ruby 2.6:
warning: BigDecimal.new is deprecated; use BigDecimal() method instead.
https://github.com/schneems/get_process_mem/blob/master/CHANGELOG.md