CI: fix autoupdate bot and don't enable it for local CI (MR 5724)

Update the bot email address, and don't enable the script for local CI
since it relies on protected GitLab CI variables. This could be fixed in
the future by safely handling these not being available.

Signed-off-by: Caleb Connolly <caleb@postmarketos.org>

.ci/autoupdate.sh

 #!/bin/sh -e
-# Description: update a list of packages
-# Options: native slow
-# https://postmarketos.org/pmb-ci
 
 if [ "$(id -u)" = 0 ]; then
 	set -x
@@ -14,11 +11,7 @@ fi
 git config --global --add safe.directory "$CI_PROJECT_DIR"
 git config --global user.name "postmarketOS CI"
 # pmaports
-# The email address is the username of the bot (from the GitLab group members page) @noreply.gitlab.com
-git config --global user.email "project_8065375_bot_13cf44ca4cd2c938688af6e3d500d9cb@noreply.gitlab.com"
-
-# For testing with pmaports-autoupdate-test repo
-# git config --global user.email "project_58002231_bot_be2d4e9e7aba929855726aafe12940d6@noreply.gitlab.com"
+git config --global user.email "project_226_bot_a365eaa0c380d1bee0af03adf42ebea3@noreply.gitlab.postmarketos.org"
 
 # Configure SSH key for signing
 mkdir -p ~/.ssh