[SPARK-52248] Use exact versions of dependency

Author: dongjoon-hyun

Package.swift

@@ -34,9 +34,9 @@ let package = Package(
       targets: ["SparkConnect"])
   ],
   dependencies: [
-    .package(url: "https://github.com/grpc/grpc-swift.git", from: "2.2.1"),
-    .package(url: "https://github.com/grpc/grpc-swift-protobuf.git", from: "1.2.0"),
-    .package(url: "https://github.com/grpc/grpc-swift-nio-transport.git", from: "1.1.0"),
+    .package(url: "https://github.com/grpc/grpc-swift.git", exact: "2.2.1"),
+    .package(url: "https://github.com/grpc/grpc-swift-protobuf.git", exact: "1.2.0"),
+    .package(url: "https://github.com/grpc/grpc-swift-nio-transport.git", exact: "1.1.0"),
     .package(url: "https://github.com/google/flatbuffers.git", branch: "v25.2.10"),
   ],
   targets: [