For pmbootstrap to not crash when it encounters a deviceinfo file that's missing the deviceinfo_chassis line, we need pmbootstrap 3.9.0 or later. Bump it as such. Signed-off-by: Stefan Hansson <newbyte@postmarketos.org> Part-of: <https://gitlab.postmarketos.org/postmarketOS/pmaports/-/merge_requests/7801>