[pkg] Restrict yams version to be less than 0.45.0
Because of reader's API changes x and other subtle but hard to debug changes
in appobjects registration in version 0.45.0.
Closes #17065626.
[theme]
inherit = pyramid
pygments_style = sphinx.pygments_styles.PyramidStyle
stylesheet = cubicweb.css
[options]
logo = logo-cubicweb.svg
favicon = cubicweb.ico
in_progress = false
outdated = false
canonical_url =