[ImgBot] Optimize images

*Total -- 503.38kb -> 442.44kb (12.11%)

/Website/raw_assets/ukraine-flag-xs.png -- 1.26kb -> 0.96kb (23.87%)
/Extensions/combined/changelog/images/colorize_example.jpg -- 9.63kb -> 8.21kb (14.74%)
/Extensions/combined/changelog/images/number_format.jpg -- 26.59kb -> 23.12kb (13.03%)
/Website/raw_assets/troubleshooting.png -- 465.90kb -> 410.15kb (11.97%)

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