Add support for ubuntu 21.10 "Impish Indri" (#11024)

* support ubuntu 21.10 indri

* add changelog

* update to correct codename

Co-authored-by: Brendan Abolivier <github@brendanabolivier.com>

Co-authored-by: Brendan Abolivier <github@brendanabolivier.com>

changelog.d/11024.misc

+Add support for Ubuntu 21.10 "Impish Indri".
\ No newline at end of file

scripts-dev/build_debian_packages

@@ -27,6 +27,7 @@ DISTS = (
     "ubuntu:bionic",  # 18.04 LTS (our EOL forced by Py36 on 2021-12-23)
     "ubuntu:focal",  # 20.04 LTS (our EOL forced by Py38 on 2024-10-14)
     "ubuntu:hirsute",  # 21.04 (EOL 2022-01-05)
+    "ubuntu:impish",  # 21.10  (EOL 2022-07)
 )
 
 DESC = """\