[ImgBot] Optimize images

*Total -- 106.12kb -> 79.39kb (25.18%)

/docs/img/trouble-chrome232.png -- 48.24kb -> 28.50kb (40.91%)
/docs/img/switching-the-base.png -- 9.57kb -> 8.14kb (14.92%)
/docs/img/pull-request.png -- 10.13kb -> 8.79kb (13.25%)
/docs/img/issue.png -- 18.18kb -> 15.90kb (12.52%)
/docs/img/catalogCategoryRepository-operations.png -- 20.00kb -> 18.06kb (9.7%)

Author: ImgBotApp