Update core extension to 0.3.13

Author: simolus3

Package.swift

@@ -18,7 +18,7 @@ let package = Package(
     ],
     dependencies: [
         .package(url: "https://github.com/powersync-ja/powersync-kotlin.git", exact: "1.0.0-BETA30.0"),
-        .package(url: "https://github.com/powersync-ja/powersync-sqlite-core-swift.git", "0.3.12"..<"0.4.0")
+        .package(url: "https://github.com/powersync-ja/powersync-sqlite-core-swift.git", "0.3.13"..<"0.4.0")
     ],
     targets: [
         // Targets are the basic building blocks of a package, defining a module or a test suite.