Py4web 1.20260518.2 published!

[Massimo DiPierro]

Lots and lots of changes:

- upgraded pydal (thanks Leonel)

- upgraded yatl helper (thanks Lucas)

- upgraded _dashboard and no.css (thanks Claude)

- removed hcaptcha (thanks ch-rigu)

- upgraded packages that had known security issues

- fixed some theoretical concurrency bugs in core

- fully audited by Claude

Please check that nothing broke.