[ImgBot] Optimize images (#770)
[ImgBot] Optimize images (#770)

/src/assets/images/thirdparty/cgc.png -- 4.38kb -> 1.83kb (58.1%)

Signed-off-by: ImgBotApp <858471a511451575f9769176c7c5b94525007a21@gmail.com>
dockstore/dockstore-ui2,dockstore/dockstore-ui2,dockstore/dockstore-ui2,dockstore/dockstore-ui2