Update SwiftFormat rules to properly format decimal numbers (#123)

Author: graycampbell

.swiftformat

@@ -12,6 +12,11 @@
 ## Date format to use in file headers: system (default), iso, dmy, mdy, or custom.
 --dateformat mdy
 
+## Grouping for decimal numbers: 3,6 (default).
+## First number: group size (the number of digits in each group).
+## Second number: threshold (the minimum number of digits in a number before grouping is applied).
+--decimalgrouping 3,4
+
 ## Change type with only static members to enum: always (default) or structs-only.
 --enumnamespaces structs-only
 

Tests/MockingTests/TestHelpers/TestBarrier.swift

@@ -31,7 +31,7 @@ actor TestBarrier {
     // MARK: Properties
 
     /// The default number of tasks used when no task count is specified.
-    static let defaultTaskCount = 1000
+    static let defaultTaskCount = 1_000
 
     /// The continuations waiting to be resumed once all tasks arrive.
     private var continuations: [CheckedContinuation<Void, Never>] = []