libretroshare: update to current upstream (2023.06.13)

net/libretroshare/Portfile

@@ -6,8 +6,8 @@ PortGroup               github 1.0
 PortGroup               legacysupport 1.1
 PortGroup               openssl 1.0
 
-github.setup            RetroShare libretroshare 21b4085c0a2000cca8f20c970cd982535cc8c94d
-version                 2023.04.26
+github.setup            RetroShare libretroshare 5a62112f7c529916da59632c96104c15873c9756
+version                 2023.06.13
 revision                0
 categories              net devel
 maintainers             {@barracuda156 gmail.com:vital.had} openmaintainer
@@ -17,12 +17,14 @@ long_description        {*}${description} RetroShare functionalities (file shari
                         are implemented under the hood by libretroshare which offer a documented C++ and JSON API. \
                         While RetroShare is an application on its own, libretroshare is meant to be used as part of other programs.
 homepage                https://retroshare.cc
-checksums               rmd160  d5b7e667965ca92a878f82417bedfd7d8b290286 \
-                        sha256  536c9a5143ec6c3260d0af7345691269cc78da739d69190264805b245543e30f \
-                        size    1910078
+checksums               rmd160  5861edca5d486c0e6e6575de694577c2a012e48c \
+                        sha256  e6561164798591641d9b7027253995c45fa4cdcad55ad7fad4dea2b8b01036e9 \
+                        size    1921151
 
 # getline, strnlen
-legacysupport.newest_darwin_requires_legacy 10
+# On <10.15 built-in libc++ has no support for std::filesystem
+legacysupport.newest_darwin_requires_legacy 18
+legacysupport.use_mp_libcxx                 yes
 
 depends_lib-append      path:lib/pkgconfig/RapidJSON.pc:rapidjson \
                         port:bzip2 \