support: update embassy-stm32 to fix address of backup registers

added untested label

assigned to @sam

added 3 commits

• d3464d58...f064a6e8 - 2 commits from branch main
• 7d5dedc3 - support: update embassy-stm32 to fix address of backup registers

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added 2 commits

• 86f6d5c3 - 1 commit from branch main
• 156b11d8 - support: update embassy-stm32 to fix address of backup registers

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enabled an automatic merge when all merge checks for 156b11d8 pass

merged