SigningTool for STM32N6 in STM32CubeProgrammer v2.21.0

[Aziz BRIGUI]

Major change in SigningTool for STM32N6 in STM32CubeProgrammer v2.21.0

This release, we decided to change signing tool behavior to not automatically align the payload to 0x400 with padding bytes, since this is not necessary for other STM32 series.

To sign binaries for STM32N6, please take care to add the -align or --align option to the signing tool command, example:

>STM32_SigningTool_CLI.exe -bin Project.bin -nk -of 0x80000000 -t fsbl -o Project-trusted.bin -hv 2.3 -dump Project-trusted.bin -align