Update actions for multiple targets

[designer2k2]

Hello, this is the way to compile the examples for many targets, its using the matrix function.

It compiles for the 4 targets that where seen here: https://github.com/pazi88/STM32_CAN/commit/04553a92a9cb367c070cb0e2d22c477f13acb97b

see here for a run with this changes: https://github.com/designer2k2/STM32_CAN/actions/runs/5136521761

If you want to add more targets just add it into the matrix list.

Further i updated:

• use latest manager link (its now STMicroelectronics and not STM32) https://github.com/stm32duino/Arduino_Core_STM32
• use matrix for multiple target
• change lint to update as lib is now in manager

[pazi88]

Thanks for this! I wasn't clever enough to add multiple targets.