update net/tdlib to 1.8.4

somehow net/tg broke. somehow updating net/tdlib makes it working
again. No idea, since tg should be using tdlib 1.7 via py-telegram
(which bundles a copy of the library, that is gross and of course don't
work on OpenBSD.)

still, it works :)

i still have to test this with a newer telega.el, but afaik there are no
other consumers in port.

Index: Makefile
===================================================================
RCS file: /home/cvs/ports/net/tdlib/Makefile,v
retrieving revision 1.6
diff -u -p -r1.6 Makefile
--- Makefile 10 Mar 2022 15:21:48 -0000 1.6
+++ Makefile 27 Jun 2022 08:55:18 -0000
@@ -7,8 +7,8 @@ COMMENT = cross-platform library for bui
# track "unofficial minor versions" which are only present as commit hashes.
GH_ACCOUNT = tdlib
GH_PROJECT = td
-GH_COMMIT = 7d41d9eaa58a6e0927806283252dc9e74eda5512
-DISTNAME = tdlib-1.7.9
+GH_COMMIT = 7eabd8ca60de025e45e99d4e5edd39f4ebd9467e
+DISTNAME = tdlib-1.8.4

SHARED_LIBS += tdjson 0.1 # 1.7.7
CATEGORIES = net
Index: distinfo
===================================================================
RCS file: /home/cvs/ports/net/tdlib/distinfo,v
retrieving revision 1.4
diff -u -p -r1.4 distinfo
--- distinfo 27 Nov 2021 18:02:34 -0000 1.4
+++ distinfo 27 Jun 2022 08:55:26 -0000
@@ -1,2 +1,2 @@
-SHA256 (tdlib-1.7.9-7d41d9ea.tar.gz) = RPzUAmKKT5wzWYizGbhuiav3gZPAsk1LRWQ93SrANn8=
-SIZE (tdlib-1.7.9-7d41d9ea.tar.gz) = 4506744
+SHA256 (tdlib-1.8.4-7eabd8ca.tar.gz) = 3qE4QUPH9FiNEjpOREEZ1xNsUOgWamoH8mbRE/mE2ms=
+SIZE (tdlib-1.8.4-7eabd8ca.tar.gz) = 4648576