[ImgBot] Optimize images

[imgbot[bot]]

Beep boop. Your images are optimized!

Your image file size has been reduced by 16% 🎉

Details

| File | Before | After | Percent reduction | |:--|:--|:--|:--| | /.github/readme/images/slack-dark-128.png | 6.45kb | 4.18kb | 35.30% | | /.github/readme/images/Layer5-MeshMentors.png | 48.19kb | 39.90kb | 17.21% | | /assets/about-layer5.svg | 1.63kb | 1.48kb | 9.16% | | /assets/social-icons/linkedIn.svg | 0.61kb | 0.58kb | 4.82% | | /assets/social-icons/youtube.svg | 0.69kb | 0.66kb | 4.27% | | /assets/social-icons/twitter.svg | 0.86kb | 0.83kb | 3.41% | | /assets/social-icons/github.svg | 0.95kb | 0.92kb | 3.08% | | /assets/social-icons/slack.svg | 1.15kb | 1.12kb | 2.55% | | /assets/social-icons/email.svg | 0.41kb | 0.40kb | 1.20% | | /assets/social-icons/discourse.svg | 0.52kb | 0.51kb | 1.14% | | /assets/social-icons/docker.svg | 1.92kb | 1.92kb | 0.25% | | /assets/meshmap-color-icon.svg | 2.69kb | 2.69kb | 0.07% | | | | | | | **Total :** | **66.07kb** | **55.18kb** | **16.47%** |

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