Release v3.8.18

What's Changed

• feat(widget): randomise the checkbox's markup, shape and position per load by @forgetso in #3305
• feat(widget): randomise the image challenge dialog's markup, controls and spacing per load by @forgetso in #3306
• fix(procaptcha-puzzle): don't spend the challenge on a tap that never moved by @forgetso in #3307
• fix(procaptcha-common): keep the checkbox still, and let its label activate it by @forgetso in #3308
• perf: slim the widget bundle by @forgetso in #3310
• Release v3.8.18 by @prosoponator-app[bot] in #3311

Full Changelog: v3.8.17...v3.8.18