Update SwiftLint to version 0.56.2

[defagos]

Description

This PR updates SwiftLint to version 0.56.2. No new rules were added, the change is therefore quite straightforward.

Changes made

Self-explanatory.

Checklist

• APIs have been properly documented (if relevant).
• The documentation has been updated (if relevant).
• New unit tests have been written (if relevant).
• The demo has been updated (if relevant).