Update snapshot testing dependency to 1.19.3 (#934)

* Fix legacy snapshot testing resolution

* Update snapshot testing to 1.19.3

Author: Kyle-Ye

Example/Example_Legacy.xcodeproj/project.pbxproj

@@ -1378,7 +1378,7 @@
 			repositoryURL = "https://github.com/OpenSwiftUIProject/swift-snapshot-testing.git";
 			requirement = {
 				kind = exactVersion;
-				version = "1.19.2";
+				version = "1.19.3";
 			};
 		};
 		278EF52B2E2272F2009C32EB /* XCRemoteSwiftPackageReference "equatable" */ = {

Example/Example_Legacy.xcodeproj/project.xcworkspace/xcshareddata/swiftpm/Package.resolved

@@ -32,7 +32,7 @@ var dependencies: [PackageDescription.Package.Dependency] = [
     .package(url: "https://github.com/swiftlang/swift-syntax.git", from: "601.0.0"),
     .package(url: "https://github.com/OpenSwiftUIProject/equatable.git", branch: "main"),
     .package(url: "https://github.com/OpenSwiftUIProject/SymbolLocator.git", from: "0.2.0"),
-    .package(url: "https://github.com/OpenSwiftUIProject/swift-snapshot-testing.git", exact: "1.19.2"),
+    .package(url: "https://github.com/OpenSwiftUIProject/swift-snapshot-testing.git", exact: "1.19.3"),
 ]
 
 if enableLookInsideServer {