[ImgBot] Optimize images

*Total -- 567.32kb -> 371.08kb (34.59%)

/images/SpringBoot/image-20200318081458019.png -- 22.06kb -> 11.16kb (49.4%)
/images/SpringBoot/image-20200318081352639.png -- 20.70kb -> 10.61kb (48.73%)
/images/SpringBoot/image-20200318085243888.png -- 65.93kb -> 35.17kb (46.65%)
/images/SpringBoot/image-20200318090128983.png -- 8.22kb -> 4.67kb (43.21%)
/images/SpringBoot/image-20200318090935285.png -- 42.46kb -> 24.29kb (42.8%)
/images/SpringBoot/image-20200318092027020.png -- 35.31kb -> 20.44kb (42.1%)
/images/SpringBoot/image-20200318090312626.png -- 38.07kb -> 22.22kb (41.63%)
/images/SpringBoot/image-20200318091558233.png -- 24.60kb -> 15.76kb (35.94%)
/images/SpringBoot/image-20200318080901881.png -- 141.03kb -> 99.72kb (29.29%)
/images/SpringBoot/image-20200318080601725.png -- 62.56kb -> 44.51kb (28.85%)
/images/SpringBoot/image-20200318081322781.png -- 46.05kb -> 35.54kb (22.83%)
/images/SpringBoot/image-20200318081112670.png -- 60.34kb -> 46.99kb (22.12%)

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