Optmize images

[niutech]

Optimize the following images to reduce their size by 20MiB (79% reduction).

Compressing content/hero/6.jpeg could save 1.3MiB (83% reduction).
Compressing content/hero/5.jpeg could save 1.1MiB (82% reduction).
Compressing content/hero/20.jpeg could save 1MiB (78% reduction).
Compressing content/hero/15.jpeg could save 984.3KiB (77% reduction).
Compressing content/hero/22.jpeg could save 982.7KiB (86% reduction).
Compressing content/hero/7.jpeg could save 912.9KiB (77% reduction).
Compressing content/hero/27.jpeg could save 875.1KiB (77% reduction).
Compressing content/hero/19.jpeg could save 861.2KiB (86% reduction).
Compressing content/hero/21.jpeg could save 852.9KiB (91% reduction).
Compressing content/hero/1.jpeg could save 796.4KiB (80% reduction).
Compressing content/hero/17.jpeg could save 773.7KiB (89% reduction).
Compressing content/hero/12.jpeg could save 744.9KiB (74% reduction).
Compressing content/hero/16.jpeg could save 744.2KiB (74% reduction).
Compressing content/hero/28.jpeg could save 740.4KiB (90% reduction).
Compressing content/hero/29.jpeg could save 686KiB (73% reduction).
Compressing content/hero/2.jpeg could save 655.8KiB (75% reduction).
Compressing content/hero/9.jpeg could save 644.2KiB (80% reduction).
Compressing content/hero/24.jpeg could save 621.4KiB (79% reduction).
Compressing content/hero/18.jpeg could save 582.1KiB (77% reduction).
Compressing content/hero/3.jpeg could save 543.2KiB (73% reduction).
Compressing content/hero/23.jpeg could save 530.1KiB (75% reduction).
Compressing content/hero/13.jpeg could save 523.5KiB (77% reduction).
Compressing content/hero/14.jpeg could save 461.1KiB (71% reduction).
Compressing content/hero/11.jpeg could save 422.3KiB (65% reduction).
Compressing content/hero/25.jpeg could save 406.4KiB (75% reduction).
Compressing content/hero/26.jpeg could save 398.2KiB (81% reduction).
Compressing content/hero/8.jpeg could save 392.7KiB (69% reduction).
Compressing content/hero/10.jpeg could save 359.5KiB (81% reduction).
Compressing content/hero/4.jpeg could save 301.8KiB (72% reduction).
Compressing content/hero/30.jpeg could save 232.5KiB (67% reduction).