CI: update actions

[dehanj]

Description

Update github actions in ci. The ones we use will soon be deprecated.

Fixes # (issues)

Type of change

Please tick any that are relevant to this PR and remove any that aren't.

• Feature (non breaking change which adds functionality)

Submission checklist

• My code follows the style guidelines of this project
• I have performed a self-review of my changes
• I have tested and verified my changes on target
• My changes are well written and CI is passing
• I have squashed my work to relevant commits and rebased on main for linear history
• I have added a "Co-authored-by: x" if several people contributed, either pair programming or by squashing commits from different authors.
• I have updated the documentation where relevant (readme, dev.tillitis.se etc.)
• QEMU is updated to reflect changes

[dehanj]

How do we test this..? Merge and see if it deploys?