Helper function to detect which package have a required version on the dependencies that could be upgraded.
Details
Increasing this version requirements won't affect users as they already should have these versions installed as required by other dependencies.
See also
Other utilities:
cran_date()
,
cran_doom()
,
cran_snapshot()
,
duplicated_alias()
,
package_date()
,
package_repos()
,
repos_dependencies()