mattermost update to 9.7.3-bb.1

Package Merge Request

Package Changes

https://repo1.dso.mil/big-bang/product/packages/mattermost/-/blob/9.7.3-bb.1/CHANGELOG.md

Package MR

big-bang/product/packages/mattermost!210 (merged)

For Issue

Closes big-bang/product/packages/mattermost#121 (closed)

Upgrade Notices

N/A

added botmr mattermost statusreview labels

assigned to @sarnowski-unicorn

changed the description

requested review from @chris.oconnell and @michaelmartin

added jaeger label

changed the description

marked this merge request as ready

approved this merge request

changed milestone to %2.26.0

merged

mentioned in commit 2efa9e7b