sysutils/ansible: Update to 2.9.21

MFH: 2021Q2
Security: 50ec3a01-ad77-11eb-8528-8c164582fbac
Security: CVE-2020-10744
Changes: https://github.com/ansible/ansible/blob/stable-2.9/changelogs/CHANGELOG-v2.9.rst#v2-9-21

(cherry picked from commit fa8d16c7aa72c988379d453f7a243e9ca51b69d9)