textproc/py-mkdocs: Update to 1.5.3

Changelog:

https://github.com/mkdocs/mkdocs/releases/tag/1.5.3

textproc/py-mkdocs/Makefile

 PORTNAME=	mkdocs
-DISTVERSION=	1.5.2
+DISTVERSION=	1.5.3
 CATEGORIES=	textproc python
 MASTER_SITES=	PYPI
 PKGNAMEPREFIX=	${PYTHON_PKGNAMEPREFIX}

textproc/py-mkdocs/distinfo

-TIMESTAMP = 1691149642
-SHA256 (mkdocs-1.5.2.tar.gz) = 70d0da09c26cff288852471be03c23f0f521fc15cf16ac89c7a3bfb9ae8d24f9
-SIZE (mkdocs-1.5.2.tar.gz) = 3642227
+TIMESTAMP = 1695108150
+SHA256 (mkdocs-1.5.3.tar.gz) = eb7c99214dcb945313ba30426c2451b735992c73c2e10838f76d09e39ff4d0e2
+SIZE (mkdocs-1.5.3.tar.gz) = 3654364