Let postmarketos-base-nofde provide a specific version of
postmarketos-fde-unlocker, so pmbootstrap considers the package for
installation. From pmb/helpers/pmaports.py:_find_package_in_apkbuild():
# Ignore provides without version, they shall never be
# automatically selected
if "=" not in provides_i:
continue
Fix for bootstrapping new repositories, which currently fails with:
ERROR: postmarketos-initramfs: dependency not found: postmarketos-fde-unlocker
...when trying to build postmarketos-cros-common or
device-valve-jupiter.
Part-of: <https://gitlab.postmarketos.org/postmarketOS/pmaports/-/merge_requests/7455>