[update-checkout] Also update swift-collections on release/6.0

(cherry picked from commit a69a1a2)

Author: lorentey

utils/update_checkout/update-checkout-config.json

@@ -170,7 +170,7 @@
                 "swiftpm": "release/6.0",
                 "swift-argument-parser": "1.2.3",
                 "swift-atomics": "1.2.0",
-                "swift-collections": "1.0.5",
+                "swift-collections": "1.1.1",
                 "swift-crypto": "3.0.0",
                 "swift-certificates": "1.0.1",
                 "swift-asn1": "1.0.0",