[ImgBot] Optimize images

*Total -- 1,402.16kb -> 976.87kb (30.33%)

/registry/coder-labs/.images/tasks-screenshot.png -- 1,400.37kb -> 975.22kb (30.36%)
/registry/coder-labs/.images/avatar.svg -- 1.79kb -> 1.66kb (7.58%)

Signed-off-by: ImgBotApp <[email protected]>

Author: ImgBotApp