Backport the replacement for deprecated dateutil.dateutil.utcfromtimestamp()

In Python 3.12 it emits warnings that sometimes cause problems (eg. failing
test suites treating warning as errors) in packages depending on this package.

f2293200747fb03d56c6c5997bfebeabe703576f.patch

@@ -0,0 +1,23 @@
+From f2293200747fb03d56c6c5997bfebeabe703576f Mon Sep 17 00:00:00 2001
+From: Thomas Grainger <tagrain@gmail.com>
+Date: Fri, 2 Jun 2023 14:06:41 +0100
+Subject: [PATCH] avoid deprecated utcfromtimestamp
+
+Fixes #1284
+---
+ src/dateutil/tz/tz.py | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/src/dateutil/tz/tz.py b/src/dateutil/tz/tz.py
+index c67f56d46..617591446 100644
+--- a/src/dateutil/tz/tz.py
++++ b/src/dateutil/tz/tz.py
+@@ -34,7 +34,7 @@
+ from warnings import warn
+ 
+ ZERO = datetime.timedelta(0)
+-EPOCH = datetime.datetime.utcfromtimestamp(0)
++EPOCH = datetime.datetime(1970, 1, 1, 0, 0)
+ EPOCHORDINAL = EPOCH.toordinal()
+ 
+ 

python-dateutil.spec

@@ -2,7 +2,7 @@
 
 Name:           python-%{modname}
 Version:        2.8.2
-Release:        8%{?dist}
+Release:        9%{?dist}
 Epoch:          1
 Summary:        Powerful extensions to the standard datetime module
 
@@ -22,6 +22,10 @@ Source:         %{pypi_source}
 # https://bugzilla.redhat.com/show_bug.cgi?id=2059950
 Patch1:         %{url}/commit/2bdd63158b7f981fc6d70a869680451bdfd8d848.patch
 
+# Backport the replacement for the deprecated in Python 3.12
+# datetime.datetime.utcfromtimestamp()
+Patch2:         %{url}/commit/f2293200747fb03d56c6c5997bfebeabe703576f.patch
+
 # when bootstrapping dateutil-freezegun, we cannot run tests
 # on RHEL, we do not have or want all test dependencies
 %bcond tests %{undefined rhel}
@@ -66,6 +70,7 @@ This package contains %{summary}.
 pushd %{modname}/test
 %patch1 -p2
 popd
+%patch2 -p2
 iconv --from=ISO-8859-1 --to=UTF-8 NEWS > NEWS.new
 mv NEWS.new NEWS
 
@@ -94,6 +99,9 @@ make -C docs html
 %doc docs/_build/html
 
 %changelog
+* Tue Jul 04 2023 Karolina Surma <ksurma@redhat.com> - 1:2.8.2-9
+- Backport replacement for deprecated datetime.datetime.utcfromtimestamp()
+
 * Fri Jun 16 2023 Python Maint <python-maint@redhat.com> - 1:2.8.2-8
 - Rebuilt for Python 3.12