Update deps (#7)

Package.resolved

@@ -1,32 +1,51 @@
 {
+  "originHash" : "4c498d7c2588dbd512e8673906348f272876b49916a585e3fdde4c616dfe07e6",
   "pins" : [
+    {
+      "identity" : "swift-custom-dump",
+      "kind" : "remoteSourceControl",
+      "location" : "https://github.com/pointfreeco/swift-custom-dump",
+      "state" : {
+        "revision" : "82645ec760917961cfa08c9c0c7104a57a0fa4b1",
+        "version" : "1.3.3"
+      }
+    },
     {
       "identity" : "swift-macro-testing",
       "kind" : "remoteSourceControl",
       "location" : "https://github.com/pointfreeco/swift-macro-testing.git",
       "state" : {
-        "revision" : "35acd9468d40ae87e75991a18af6271e8124c261",
-        "version" : "0.2.1"
+        "revision" : "20c1a8f3b624fb5d1503eadcaa84743050c350f4",
+        "version" : "0.5.2"
       }
     },
     {
       "identity" : "swift-snapshot-testing",
       "kind" : "remoteSourceControl",
       "location" : "https://github.com/pointfreeco/swift-snapshot-testing",
       "state" : {
-        "revision" : "bb0ea08db8e73324fe6c3727f755ca41a23ff2f4",
-        "version" : "1.14.2"
+        "revision" : "f5bfff796ee8e3bc9a685b7ffba1bf20663eb370",
+        "version" : "1.18.0"
       }
     },
     {
       "identity" : "swift-syntax",
       "kind" : "remoteSourceControl",
       "location" : "https://github.com/apple/swift-syntax.git",
       "state" : {
-        "revision" : "ffa3cd6fc2aa62adbedd31d3efaf7c0d86a9f029",
-        "version" : "509.0.1"
+        "revision" : "0687f71944021d616d34d922343dcef086855920",
+        "version" : "600.0.1"
+      }
+    },
+    {
+      "identity" : "xctest-dynamic-overlay",
+      "kind" : "remoteSourceControl",
+      "location" : "https://github.com/pointfreeco/xctest-dynamic-overlay",
+      "state" : {
+        "revision" : "b444594f79844b0d6d76d70fbfb3f7f71728f938",
+        "version" : "1.5.1"
       }
     }
   ],
-  "version" : 2
+  "version" : 3
 }

Package.swift

@@ -14,8 +14,8 @@ let package = Package(
     ),
   ],
   dependencies: [
-    .package(url: "https://github.com/apple/swift-syntax.git", from: "509.0.0"),
-    .package(url: "https://github.com/pointfreeco/swift-macro-testing.git", from: "0.2.1")
+    .package(url: "https://github.com/apple/swift-syntax.git", from: "600.0.0"),
+    .package(url: "https://github.com/pointfreeco/swift-macro-testing.git", from: "0.5.2")
   ],
   targets: [
     .macro(