Add swift-collections dependency

In the future we want to use Deque in RediStack. For this we need to add `swift-collections`.

Author: fabianfett

Package.swift

@@ -24,6 +24,7 @@ let package = Package(
     ],
     dependencies: [
         .package(url: "https://github.com/apple/swift-atomics.git", from: "1.1.0"),
+        .package(url: "https://github.com/apple/swift-collections.git", from: "1.0.4"),
         .package(url: "https://github.com/apple/swift-log.git", from: "1.0.0"),
         .package(url: "https://github.com/apple/swift-metrics.git", "1.0.0" ..< "3.0.0"),
         .package(url: "https://github.com/apple/swift-nio.git", from: "2.43.0"),
@@ -34,9 +35,10 @@ let package = Package(
             dependencies: [
                 .product(name: "NIOCore", package: "swift-nio"),
                 .product(name: "NIOPosix", package: "swift-nio"),
-                .product(name: "NIO", package: "swift-nio"),
                 .product(name: "NIOConcurrencyHelpers", package: "swift-nio"),
+                .product(name: "NIO", package: "swift-nio"),
                 .product(name: "Atomics", package: "swift-atomics"),
+                .product(name: "DequeModule", package: "swift-collections"),
                 .product(name: "Logging", package: "swift-log"),
                 .product(name: "Metrics", package: "swift-metrics")
             ]