[MacPorts] #62764: libreoffice @7.1.3.1: configure: error: "Xcode 10.3" is too old or unrecognized, must be at least Xcode 11.3

[MacPorts]

#62764: libreoffice @7.1.3.1: configure: error: "Xcode 10.3" is too old or
unrecognized, must be at least Xcode 11.3
------------------------+-------------------------
 Reporter:  ryandesign  |      Owner:  Tatsh
     Type:  defect      |     Status:  assigned
 Priority:  Normal      |  Milestone:
Component:  ports       |    Version:  2.6.4
 Keywords:              |       Port:  libreoffice
------------------------+-------------------------
 The libreoffice Portfile contains this check:
 {{{
 if {${os.major} < 14} {
     pre-fetch {
         ui_error "${name} @${version} requires OS X 10.10 or later."
         return -code error "incompatible OS X version"
     }
 }
 }}}
 That may need to be revised because the current version fails to build
 even on macOS 10.14 with Xcode 10.3:

 https://build.macports.org/builders/ports-10.14_x86_64-builder/builds/85187/steps
 /install-port/logs/stdio
 {{{
 checking whether Xcode is new enough... configure: error: "Xcode 10.3" is
 too old or unrecognized, must be at least Xcode 11.3
 }}}
 Xcode 11.3 requires macOS 10.15, so I guess libreoffice now requires macOS
 10.15 or later. :(

 Also, please add `known_fail yes` within the same block where you define
 the `pre-fetch` so that the buildbot can skip the port entirely on those
 systems.

-- 
Ticket URL: <https://trac.macports.org/ticket/62764>
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