security/py-google-auth: Update to 2.16.1

Changes:	https://github.com/googleapis/google-auth-library-python/releases

security/py-google-auth/Makefile

 PORTNAME=	google-auth
-PORTVERSION=	2.16.0
+PORTVERSION=	2.16.1
 CATEGORIES=	security python
 MASTER_SITES=	PYPI
 PKGNAMEPREFIX=	${PYTHON_PKGNAMEPREFIX}

security/py-google-auth/distinfo

-TIMESTAMP = 1674589992
-SHA256 (google-auth-2.16.0.tar.gz) = ed7057a101af1146f0554a769930ac9de506aeca4fd5af6543ebe791851a9fbd
-SIZE (google-auth-2.16.0.tar.gz) = 223336
+TIMESTAMP = 1677771349
+SHA256 (google-auth-2.16.1.tar.gz) = 5fd170986bce6bfd7bb5c845c4b8362edb1e0cba901e062196e83f8bb5d5d32c
+SIZE (google-auth-2.16.1.tar.gz) = 221594