[common-utils] use new ohmyzsh setting to disable auto update (#1424)

* Use new config to disable OhMyZsh auto update

There's a new method:
https://github.com/ohmyzsh/ohmyzsh/wiki/Settings#deprecated-settings

* bump patch version

* Remove `buster` from testing scenarios as it is EOL

---------
Co-authored-by: Álvaro Rausell Guiard <33221237+AlvaroRausell@users.noreply.github.com>

src/common-utils/devcontainer-feature.json

 {
     "id": "common-utils",
-    "version": "2.5.3",
+    "version": "2.5.4",
     "name": "Common Utilities",
     "documentationURL": "https://github.com/devcontainers/features/tree/main/src/common-utils",
     "description": "Installs a set of common command line utilities, Oh My Zsh!, and sets up a non-root user.",

src/common-utils/main.sh

@@ -558,7 +558,7 @@ if [ "${INSTALL_ZSH}" = "true" ]; then
         # Add devcontainer .zshrc template
         if [ "$INSTALL_OH_MY_ZSH_CONFIG" = "true" ]; then
             if ! [ -f "${template_path}" ] || ! grep -qF "$(head -n 1 "${template_path}")" "${user_rc_file}"; then
-                echo -e "$(cat "${template_path}")\nDISABLE_AUTO_UPDATE=true\nDISABLE_UPDATE_PROMPT=true" > ${user_rc_file}
+                echo -e "$(cat "${template_path}")\nzstyle ':omz:update' mode disabled" > ${user_rc_file}
             fi
             sed -i -e 's/ZSH_THEME=.*/ZSH_THEME="devcontainers"/g' ${user_rc_file}
         fi

test/common-utils/buster.sh

-#!/bin/bash
-
-set -e
-
-# Optional: Import test library
-source dev-container-features-test-lib
-
-# Definition specific tests
-. /etc/os-release
-check "non-root user" test "$(whoami)" = "devcontainer"
-check "distro" test "${VERSION_CODENAME}" = "buster"
-
-# Report result
-reportResults
\ No newline at end of file

test/common-utils/scenarios.json

@@ -13,13 +13,6 @@
             "common-utils": {}
         }
     },    
-    "buster": {
-        "image": "debian:buster",
-        "remoteUser": "devcontainer",
-        "features": {
-            "common-utils": {}
-        }
-    },
     "bullseye": {
         "image": "debian:bullseye",
         "remoteUser": "devcontainer",