!37 add install requires

From: @ll3366 
Reviewed-by: @weidongkl 
Signed-off-by: @weidongkl

dde.spec

@@ -2,7 +2,7 @@
 
 Name:           dde
 Version:        2020.11.03
-Release:        3
+Release:        4
 Summary:        Deepin New Desktop Environment - Next
 License:        GPLv3
 URL:            https://uos-packages.deepin.com/uos/pool/main/d/dde/
@@ -10,6 +10,7 @@ Source0:        dde.conf
 Source1:        dde
 
 BuildRequires:	shadow
+Requires:  	systemd-pam
 Requires:  	lightdm
 Requires:	plymouth
 Requires:  	mesa-dri-drivers
@@ -146,6 +147,9 @@ openeuler" | passwd openeuler > /dev/null 2>&1
 %{_sysconfdir}/logrotate.d/dde
 
 %changelog
+* Thu Feb 24 2022 liweigang <liweiganga@uniontech.com> - 2020.11.03-4
+- add install require
+
 * Tue Aug 26 2021 heyitao <heyitao@uniontech.com> - 2020.11.03-3
 - add install require