[ImgBot] Optimize images

*Total -- 452.13kb -> 207.34kb (54.14%)

/halo_halo/halo_halo_linkedin.png -- 112.58kb -> 51.19kb (54.53%)
/halo_halo/halo_halo_twitter.png -- 112.06kb -> 51.36kb (54.17%)
/halo_halo/halo_halo_instagram.png -- 113.26kb -> 51.94kb (54.14%)
/halo_halo/halo_halo_whatsapp.png -- 114.23kb -> 52.85kb (53.73%)

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

Author: ImgBotApp