Version $3\mathrm{.}0\mathrm{.}1$ of a REST API implementation represents time values in PST time using ISO $8601$ hh:mm:ss format. The API implementation needs to be changed to instead represent time values in CEST time using ISO $8601$ hh:mm:ss format. When following the

semver.org semantic versioning specification, what version should be assigned to the updated API implementation?

$3\mathrm{.}0\mathrm{.}1$

$3\mathrm{.}1\mathrm{.}0$

$3\mathrm{.}0\mathrm{.}2$

$4\mathrm{.}0\mathrm{.}0$