- Update to new upstream release 1.21.3

OBS-URL: https://build.opensuse.org/package/show/devel:tools/grpc?expand=0&rev=42

grpc.spec

@@ -20,9 +20,9 @@
 %define src_install_dir /usr/src/%{name}
 %{?!python_module:%define python_module() python-%{**} python3-%{**}}
 Name:           grpc
-Version:        1.19.1
+Version:        1.21.3
 Release:        0
-%define rver	1.19.1
+%define rver	1.21.3
 Summary:        HTTP/2-based Remote Procedure Call implementation
 License:        Apache-2.0
 Group:          Development/Tools/Building
@@ -37,7 +37,7 @@ BuildRequires:  pkg-config
 BuildRequires:  python-rpm-macros
 BuildRequires:  pkgconfig(libcares)
 BuildRequires:  pkgconfig(openssl) >= 1.0.1
-BuildRequires:  pkgconfig(protobuf) > 3.5.0
+BuildRequires:  pkgconfig(protobuf) >= 3.8.0
 BuildRequires:  pkgconfig(zlib)
 BuildRoot:      %{_tmppath}/%{name}-%{version}-build