net/syncthing: update to 1.23.4

https://github.com/syncthing/syncthing/releases

works for me on amd64.
OK?

Index: Makefile
===================================================================
RCS file: /cvs/ports/net/syncthing/Makefile,v
retrieving revision 1.48
diff -u -p -r1.48 Makefile
--- Makefile 8 Mar 2023 14:32:17 -0000 1.48
+++ Makefile 29 Apr 2023 13:40:41 -0000
@@ -1,6 +1,6 @@
COMMENT = open decentralized synchronization utility

-V = 1.23.2
+V = 1.23.4
DISTNAME = syncthing-${V}
DISTFILES = syncthing-source-v${V}${EXTRACT_SUFX}

Index: distinfo
===================================================================
RCS file: /cvs/ports/net/syncthing/distinfo,v
retrieving revision 1.33
diff -u -p -r1.33 distinfo
--- distinfo 8 Mar 2023 14:32:17 -0000 1.33
+++ distinfo 29 Apr 2023 13:41:12 -0000
@@ -1,2 +1,2 @@
-SHA256 (syncthing-source-v1.23.2.tar.gz) = PQ7KDm9Oquukh5kYs/VPR9WftfQoioOvgh1QknGtoYk=
-SIZE (syncthing-source-v1.23.2.tar.gz) = 14413300
+SHA256 (syncthing-source-v1.23.4.tar.gz) = BqKIL4rEnhX6+WAlsB0O3NTMGQpBnV3pj76CcWlTKfo=
+SIZE (syncthing-source-v1.23.4.tar.gz) = 14141457