temporary fix for lavaan incompatability

[Elliot Tucker-Drob]

Hi All,

GenomicSEM is currently producing some errors related to the most recent lavaan version update. We're working on a fix, but in the meantime you can downgrade to lavaan version 0.6-21 as follows:

remotes::install_version(
  "lavaan",
  version = "0.6-21",
  repos = "https://cloud.r-project.org",
  dependencies = FALSE,
  upgrade = "never"
)