!4 Update package to version 0.21.0

From: @jxy_git 
Reviewed-by: @yangzhao_kl 
Signed-off-by: @yangzhao_kl

python-zstandard.spec

@@ -1,12 +1,11 @@
 %global _empty_manifest_terminate_build 0
 Name:		python-zstandard
-Version:	0.20.0
+Version:	0.21.0
 Release:	1
 Summary:	Zstandard bindings for Python
 License:	BSD-3-Clause
 URL:		https://github.com/indygreg/python-zstandard
-Source0:    	https://files.pythonhosted.org/packages/02/f8/9ee010452d7be18c699ddc598237b52215966220401289c66b7897c7ecfb/zstandard-0.20.0.tar.gz
+Source0:	https://files.pythonhosted.org/packages/4d/70/1f883646641d7ad3944181549949d146fa19e286e892bc013f7ce1579e8f/zstandard-0.21.0.tar.gz
-Requires:	python3-cffi
 
 %description
 This project provides Python bindings for interfacing with the Zstandard
@@ -14,12 +13,13 @@ compression library. A C extension and CFFI interface are provided.
 
 %package -n python3-zstandard
 Summary:	Zstandard bindings for Python
-Provides:	python-zstandard
+Provides:	python-zstandard = %{version}-%{release}
 BuildRequires:	python3-devel python3-hypothesis
 BuildRequires:	python3-setuptools
 BuildRequires:	python3-cffi
 BuildRequires:	gcc
 BuildRequires:	gdb
+Requires:	    python3-cffi
 %description -n python3-zstandard
 This project provides Python bindings for interfacing with the Zstandard 
 compression library. A C extension and CFFI interface are provided.
@@ -75,6 +75,9 @@ mv %{buildroot}/doclist.lst .
 %{_docdir}/*
 
 %changelog
+* Tue Jun 06 2023 jiangxinyu <jiangxinyu@kylinos.cn> - 0.21.0-1
+- Update package to version 0.21.0
+
 * Mon Feb 27 2023 wubijie <wubijie@kylinos.cn> - 0.20.0-1
 - Update package to version 0.20.0