UPDATE security/py-securesystemslib to 0.24.0

[George Rosamond]

Update from 0.23.0 to 0.24.0. It's a dependency for security/py-in-toto 
which builds fine with this update.

REVISION dropped.
https://github.com/secure-systems-lab/securesystemslib/blob/master/CHANGELOG.md

Thanks

gIndex: py-securesystemslib//Makefile
===================================================================
RCS file: /cvs/ports/security/py-securesystemslib/Makefile,v
retrieving revision 1.4
diff -u -p -r1.4 Makefile
--- py-securesystemslib//Makefile	13 Sep 2022 20:56:22 -0000	1.4
+++ py-securesystemslib//Makefile	15 Sep 2022 19:37:01 -0000
@@ -1,10 +1,9 @@
 COMMENT =	library providing cryptographic and general-purpose routines
 
-MODPY_EGG_VERSION =	0.23.0
+MODPY_EGG_VERSION =	0.24.0
 
 DISTNAME =	securesystemslib-${MODPY_EGG_VERSION}
 PKGNAME =	py-${DISTNAME}
-REVISION =	1
 
 CATEGORIES =	security
 
Index: py-securesystemslib//distinfo
===================================================================
RCS file: /cvs/ports/security/py-securesystemslib/distinfo,v
retrieving revision 1.1.1.1
diff -u -p -r1.1.1.1 distinfo
--- py-securesystemslib//distinfo	23 Aug 2022 20:33:51 -0000	1.1.1.1
+++ py-securesystemslib//distinfo	15 Sep 2022 19:37:01 -0000
@@ -1,2 +1,2 @@
-SHA256 (securesystemslib-0.23.0.tar.gz) = Vz6cgQ8qav6axxoXfya51qMhxTV09WH1zvLtURw/GDE=
-SIZE (securesystemslib-0.23.0.tar.gz) = 174862
+SHA256 (securesystemslib-0.24.0.tar.gz) = KOqcRJVrc8/hQAcDrhHeUQf218YvRGPaHMtjCXv4XVs=
+SIZE (securesystemslib-0.24.0.tar.gz) = 176931