libsolv: update tag for missing CVEs

It seems like CVE-2021-33928, CVE-2021-33929, CVE-2021-33930 and
CVE-2021-33938 are pointing to same patch as CVE-2021-3200

So add CVE tag inside the patch file which is the remedy for
CVE-2021-33928, CVE-2021-33929, CVE-2021-33930 and CVE-2021-33938

Link:
https://ubuntu.com/security/CVE-2021-3200
https://ubuntu.com/security/CVE-2021-33928
https://ubuntu.com/security/CVE-2021-33929
https://ubuntu.com/security/CVE-2021-33930
https://ubuntu.com/security/CVE-2021-33938



Signed-off-by: Ranjitsinh Rathod <ranjitsinh.rathod@kpit.com>
Signed-off-by: Ranjitsinh Rathod <ranjitsinhrathod1991@gmail.com>
Signed-off-by: Steve Sakoman <steve@sakoman.com>