comms/fldigi: update to 4.1.23

2022-06-23 dave-w1hkj <w1hkj@bellsouth.net>

19c12f097: Version 4.1.23
ce88da596: Deprecated code
5dd676f6b: Correct errors caused by commit 9c035e809b
4213bfaec: xmlrpc notch
bd2b4e0e1: audio alerts / monitor
e6da5c5ef: cw browser
c9a74fb13: nanoIO ptt
bf321f312: Signal browser
cea496b7a: cw via flrig
2e4a8517d: scripts
65a6da643: FSK via flrig / nanoIO
20a799a5a: INSTALL update