Run translation CI if there is a change in a string.xml file

In #42480 (closed) I forgot to make the translation CI run automatically if there is a change in (android) *strings.xml files.

added 14.0 stable Doing Task labels

assigned to @henry

marked this issue as related to #42480 (closed)

added Localization label

mentioned in merge request !1235 (merged)

marked this issue as related to tor-browser-build#41249 (closed)

closed

added Build System label