update thanos to 15.9.1-bb.1

Package Merge Request

Package Changes

https://repo1.dso.mil/big-bang/product/packages/thanos/-/blob/main/CHANGELOG.md

Package MR

big-bang/product/packages/thanos!114 (merged)

For Issue

Closes big-bang/product/packages/thanos#91 (closed)

Upgrade Notices

N/A

assigned to @piotr.machaj

requested review from @michaelmartin and @chris.oconnell

requested review from @andrewshoell

added botmr statusreview thanos labels

changed milestone to %2.47.0

changed milestone to %2.48.0

changed milestone to %2.47.0

marked this merge request as ready

approved this merge request

merged

mentioned in commit 90e6278a