config: disable SwiftLint redundant_discardable_let rule

Preserve 'let _ =' in result builder contexts (required for Swift 6.0+)

Author: coenttb

.swiftlint.yml

@@ -2,6 +2,7 @@ disabled_rules:
   - line_length
   - identifier_name
   - nesting
+  - redundant_discardable_let  # Preserve 'let _ =' in result builder contexts (required for Swift 6.0+)
 
 opt_in_rules:
   - empty_count