OpenMRS 2.3 submodule not conditionally included in OpenMRS 2.4+

The conditionalResources section of the config.xml file currently lists out each successive 2.x.x version that each 2.x.x submodule supports. However, the appropriate versions were never added to the webservices.rest-omod-2.3.* resource, leading to the features added here becoming unavailable when run on core versions from 2.4.x and up. This needs to be addressed.

As a part of this ticket, we should update the format of the versions included by these conditional resources to use the range notation that we added on each individual class recently (eg. 2.1.* - 9.9.*) to avoid having to remember to update this on each successive OpenMRS minor version addition.