devel/py-ddtrace: Update to 1.18.4

Changes:	https://github.com/DataDog/dd-trace-py/releases
		https://ddtrace.readthedocs.io/en/stable/release_notes.html

devel/py-ddtrace/Makefile

 PORTNAME=	ddtrace
-PORTVERSION=	1.18.3
+PORTVERSION=	1.18.4
 CATEGORIES=	devel python
 MASTER_SITES=	PYPI
 PKGNAMEPREFIX=	${PYTHON_PKGNAMEPREFIX}

devel/py-ddtrace/distinfo

-TIMESTAMP = 1693333955
-SHA256 (ddtrace-1.18.3.tar.gz) = 083f9a014fc64914a61baa46b47dca8b6417caf5807701b5e1c284d0b7f7f987
-SIZE (ddtrace-1.18.3.tar.gz) = 6237587
+TIMESTAMP = 1694348268
+SHA256 (ddtrace-1.18.4.tar.gz) = 3cd30ab06df6cad66f9ed5c6f8876638f45e79ca1dc56424b67340a0975f546f
+SIZE (ddtrace-1.18.4.tar.gz) = 6240426
 SHA256 (abseil-abseil-cpp-20230802.0_GH0.tar.gz) = 59d2976af9d6ecf001a81a35749a6e551a335b949d34918cfade07737b9d93c5
 SIZE (abseil-abseil-cpp-20230802.0_GH0.tar.gz) = 2156669