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

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