Add testing for Debian 11 in the CI

Also updates the readme to reflect this test.

Author: daltonv

.github/workflows/main.yml

@@ -21,6 +21,8 @@ jobs:
             tag: "latest"
           - os: "debian10"
             tag: "latest"
+          - os: "debian11"
+            tag: "latest"
           - os: "fedora35"
             tag: "latest"
           - os: "ubuntu18"

README.md

@@ -34,7 +34,7 @@ Personal Access Token for GitHub account can be created [here](https://github.co
 * AMD64, x86_64
 ## Tested on:
 
-* Debian 9,10
+* Debian 9,10,11
 * Fedora 35
 * Rocky Linux 8
 * Ubuntu 18,20