[ImgBot] Optimize images

*Total -- 661.49kb -> 601.39kb (9.09%)

/assets/hacktoberfest-2025.png -- 323.48kb -> 279.19kb (13.69%)
/assets/Rules Channel.png -- 168.27kb -> 158.48kb (5.82%)
/assets/Ticket Channel.png -- 169.73kb -> 163.72kb (3.54%)

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