Update mattermost/mattermost-team-edition Docker tag to v9.4.2

This MR contains the following updates:

Package	Type	Update	Change
mattermost/mattermost-team-edition		patch	9.4.1 -> 9.4.2
mattermost/mattermost-team-edition	ironbank-docker	patch	9.4.1 -> 9.4.2
mattermost/mattermost-team-edition	stage	patch	9.4.1 -> 9.4.2

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