[ImgBot] Optimize images

*Total -- 736.98kb -> 535.03kb (27.4%)

/images/micro-deployment.png -- 50.89kb -> 34.59kb (32.04%)
/docs/micro-services/images/micro-deployment.png -- 50.89kb -> 34.59kb (32.04%)
/docs/micro-services/images/sketch.png -- 67.55kb -> 45.98kb (31.93%)
/images/sketch.png -- 67.55kb -> 45.98kb (31.93%)
/images/conways-law.png -- 56.82kb -> 40.04kb (29.53%)
/docs/micro-services/images/conways-law.png -- 56.82kb -> 40.04kb (29.53%)
/images/decentralised-data.png -- 71.29kb -> 53.46kb (25.02%)
/docs/micro-services/images/decentralised-data.png -- 71.29kb -> 53.46kb (25.02%)
/images/basic-pipeline.png -- 44.93kb -> 33.70kb (25%)
/docs/micro-services/images/basic-pipeline.png -- 44.93kb -> 33.70kb (25%)
/docs/micro-services/images/PreferFunctionalStaffOrganization.png -- 77.01kb -> 59.75kb (22.41%)
/images/PreferFunctionalStaffOrganization.png -- 77.01kb -> 59.75kb (22.41%)