Python version 3.11 (#237)

* Adding 3.11 option

* Updating tests.

src/python/devcontainer-feature.json

@@ -11,6 +11,7 @@
         "latest",
         "os-provided",
         "none",
+        "3.11",
         "3.10",
         "3.9",
         "3.8",

test/python/install_additional_python.sh

@@ -5,8 +5,9 @@ set -e
 # Optional: Import test library
 source dev-container-features-test-lib
 
-check "python version 3.10.5 installed as default" python --version | grep 3.10.5
-check "python3 version 3.10.5 installed as default" python3 --version | grep 3.10.5
+check "python version 3.11 installed as default" python --version | grep 3.11
+check "python3 version 3.11 installed as default" python3 --version | grep 3.11
+check "python version 3.10.5 installed"  ls -l /usr/local/python | grep 3.10.5
 check "python version 3.8.13 installed"  ls -l /usr/local/python | grep 3.8.13
 check "python version 3.9.13 installed"  ls -l /usr/local/python | grep 3.9.13
 

test/python/scenarios.json

@@ -3,8 +3,8 @@
         "image": "ubuntu:focal",
         "features": {
             "python": {
-                "version": "3.10.5",
-                "additionalVersions": "3.8,3.9.13"
+                "version": "3.11",
+                "additionalVersions": "3.8,3.9.13,3.10.5"
             }
         }
     },