arneis-social-media: New @alv67 post on LinkedIn

[gmacario]

Closes #

📑 Description

✅ Checks

• [x] My pull request adheres to the code style of this project
• [ ] My code requires changes to the documentation
• [x] I have updated the documentation as required
• [x] All the tests have passed

ℹ Additional Information

[gmacario]

No review feedbacks received, merging PR so that it will be included in Release dev-cw18

[alv67]

As usual when I'm able to do the review, you have just done the merge!