[ImgBot] Optimize images (#7505)

*Total -- 387.35kb -> 374.65kb (3.28%)

/examples/assets/textures/seaside-rocks01-roughness.jpg -- 95.88kb -> 92.00kb (4.05%)
/examples/assets/textures/seaside-rocks01-ao.jpg -- 162.70kb -> 156.30kb (3.94%)
/examples/assets/textures/seaside-rocks01-height.jpg -- 68.61kb -> 66.52kb (3.05%)
/examples/assets/textures/hatch-4.jpg -- 60.16kb -> 59.83kb (0.55%)

Signed-off-by: ImgBotApp <[email protected]>
Co-authored-by: ImgBotApp <[email protected]>
Co-authored-by: Will Eastcott <[email protected]>

Author: 3 people