[ImgBot] Optimize images

[imgbot]

Beep boop. Your images are optimized!

Your image file size has been reduced by 22% 🎉

Details

File	Before	After	Percent reduction
/source/image/config_varnish_admin.png	86.35kb	51.41kb	40.47%
/source/image/github.png	1.67kb	1.08kb	35.65%
/source/image/5-http-purger-header-cache-tags.png	64.65kb	47.50kb	26.53%
/source/image/2-add-purger.png	133.65kb	100.72kb	24.64%
/source/image/varnishtest_anatomy.svg	2.61kb	2.09kb	20.10%
/source/image/1-set-page-cache-max-age.png	66.35kb	53.29kb	19.70%
/source/image/4-http-purger-request.png	151.82kb	123.21kb	18.85%
/source/image/test.svg	2.73kb	2.24kb	17.84%
/source/image/3-http-purger.png	93.59kb	77.95kb	16.71%
/source/image/edit.png	0.80kb	0.68kb	14.51%
/source/image/vcl-1.png	81.15kb	70.98kb	12.53%
/source/image/simplified_fsm.svg	18.03kb	15.81kb	12.29%
Total :	703.41kb	546.96kb	22.24%

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