[ImgBot] Optimize images

*Total -- 815.87kb -> 680.44kb (16.6%)

/assets/images/certificate_image/INTERNSHALA_TRAININGS_ANDROID_JETPACK_CERTIFICATE.png -- 377.00kb -> 263.94kb (29.99%)
/assets/images/project_image/uqi_logo.png -- 51.45kb -> 45.83kb (10.94%)
/assets/images/cover2.jpeg -- 387.42kb -> 370.67kb (4.32%)

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Author: ImgBotApp