[ImgBot] Optimize images

*Total -- 42.33kb -> 22.79kb (46.15%)

/content/assets/img/togoimputation.png -- 18.31kb -> 8.32kb (54.57%)
/content/assets/img/ctao.png -- 24.02kb -> 14.47kb (39.74%)

Signed-off-by: ImgBotApp <ImgBotHelp@gmail.com>

Author: ImgBotApp