Reverse dependencies for memcache_mock

Latest version of the following gems require memcache_mock

Gem	Version	Date	Downloads
circuitry +1.45 Million Downloads	`3.5.0` January 27, 2023	January 27, 2023	1.45 Million
pebblebed +280 Thousand Downloads	`0.4.11` February 18, 2020	February 18, 2020	280 Thousand
time_window_drop_collector +55.4 Thousand Downloads	`0.3.3` January 07, 2014	January 07, 2014	55.4 Thousand
iban-lookup +33.5 Thousand Downloads	`1.1.0` December 01, 2016	December 01, 2016	33.5 Thousand