- update to 5.4.1:
  * fixed a regression from version 5.4.0 that incorrectly
    handled files opened twice via file descriptor
- update to 5.4.0
  * Improves permission handling.
  * added support for `O_NOFOLLOW` and `O_DIRECTORY` flags in
    `os.open`
  * added support for fake `os.dup`, `os.dup2` and `os.lseek`
  * fixed a specific problem on reloading a pandas-related module
  * added possibility for unload hooks for specific modules
    use this also to reload django views (see #932)
  * fixed `EncodingWarning` for Python >= 3.11 (see #957)
    consider directory ownership while adding or removing
    directory entries
  * fixed handling of directory enumeration and search
    permissions under Posix systems
  * fixed creation of the temp directory in the fake file system
    after a filesystem reset
  * fixed handling of `dirfd` in `os.symlink` (see #968)
  * add missing `follow_symlink` argument to `os.link` (see #973)
  * fixed handling of missing attribute in `os.getxattr` (see
  * fixed permission problem with `shutil.rmtree` if emulating
    Windows under POSIX
  * fixed handling of errors on opening files via file descriptor
  * fixed handling of `umask` - it is now applied by default
  * fixed behavior of `os.makedirs` (see #987)

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