*/*: Sunset 12.3-RELEASE from ports tree

• Mk/bsd.port.mk: mark FreeBSD 12.3 as unsupported.
• Mk/Uses/cabal.mk: Remove the text-2 workaround for 12.3-RELEASE
• biology/wfa2-lib: remove obsolete patch
• databases/mongodb60: remove IGNORE for EOL FreeBSD 12.3
• devel/concurrencpp: remove workaround for EOL FreeBSD 12.3
• devel/electron22: remove IGNORE for EOL FreeBSD 12.3
• devel/malloy: this should build fine on 12.4-RELEASE
• devel/qcoro: remove BROKEN for EOL FreeBSD 12.3
• devel/root: remove workaround for EOL FreeBSD 12.3
• editors/imhex: remove IGNORE for EOL FreeBSD 12.3
• emulators/ppsspp: remove workaround for EOL FreeBSD 12.3
• emulators/rpcs3: remove workaround for EOL FreeBSD 12.3
• emulators/yuzu: remove workaround for EOL 12.3-RELEASE
• games/aquaria: remove support for EOL FreeBSD 12.3
• games/punchy: remove workaround for EOL FreeBSD 12.3
• graphics/cxxplot: remove support for EOL FreeBSD 12.3
• lang/gcc11*: bump a __FreeBSD_version in libphobos to 1204000
• lang/rust: untangle OSVERSION logic a bit
• misc/mbuffer: remove workaround for EOL FreeBSD 12.3 for aarch64
• sysutils/libdisplay-info: remove workaround for EOL FreeBSD 12.3
• www/*chromium: remove IGNORE for EOL FreeBSD 12.3
• x11/hyprpaper: remove workaround for expired FreeBSD 12.3
• x11-wm/labwc: remove workaround for EOL FreeBSD 12.3
• x11-wm/kwinft: remove workaround for EOL FreeBSD 12.3
• www/iridium: remove IGNORE for EOL FreeBSD 12.3

Differential Revision: https://reviews.freebsd.org/D38664