mod: bump golang.org/x/image from 0.29.0 to 0.31.0#75

dependabot[bot] wants to merge 1 commit intomainflamego/captcha:mainfrom

dependabot/go_modules/golang.org/x/image-0.31.0flamego/captcha:dependabot/go_modules/golang.org/x/image-0.31.0Copy head branch name to clipboard