fix: writing into user's directory

[Fersoil]

Checklist

• I added a very descriptive title to this issue.
• I used the GitHub search to find a similar question and didn't find it.
• I am sure that this is a bug in PvSTATEM package rather than my code.
• The bug is not resolved by updating to the latest stable version of PvSTATEM package.
• I included a link to the documentation page I am referring to (if applicable).

Reproduction steps

devtools::check(cran=TRUE)

Error Message and Stack Trace (if applicable)

Kurt Hornik writes:

The check problems on the Debian systems are caused by attempts to write
to the user library to which all packages get installed before checking
(and which now is remounted read-only for checking).

Having package code which is run as part of the checks and attempts to
write to the user library violates the CRAN Policy's

Packages should not write in the user’s home filespace (including
clipboards), nor anywhere else on the file system apart from the R
session’s temporary directory (or during installation in the location
pointed to by TMPDIR: and such usage should be cleaned up).

OS

Linux