[update-checkout] Pin swift-crypto to a version

[swift-crypto v1.1.4](https://github.com/apple/swift-crypto/releases/tag/1.1.4) has all the changes we need and we can pin to that version instead of `main`.

Author: yim-lee

utils/update_checkout/update-checkout-config.json

@@ -66,7 +66,7 @@
                 "swift-tools-support-core": "main",
                 "swiftpm": "main",
                 "swift-argument-parser": "0.3.0",
-                "swift-crypto": "main",
+                "swift-crypto": "1.1.4",
                 "swift-driver": "main",
                 "swift-syntax": "main",
                 "swift-stress-tester": "main",
@@ -94,7 +94,7 @@
                 "swift-tools-support-core": "main",
                 "swiftpm": "main",
                 "swift-argument-parser": "0.3.0",
-                "swift-crypto": "main",
+                "swift-crypto": "1.1.4",
                 "swift-driver": "main",
                 "swift-syntax": "main",
                 "swift-stress-tester": "main",
@@ -125,7 +125,7 @@
                 "swift-tools-support-core": "main",
                 "swiftpm": "main",
                 "swift-argument-parser": "0.3.0",
-                "swift-crypto": "main",
+                "swift-crypto": "1.1.4",
                 "swift-driver": "main",
                 "swift-syntax": "main",
                 "swift-stress-tester": "main",