Bump vm_service to 7.4.0 (#1445)

* Bump vm_service to 7.4.0

* add todos

Author: kenzieschmoll

dwds/lib/src/services/chrome_proxy_service.dart

@@ -1036,6 +1036,19 @@ ${globalLoadStrategy.loadModuleSnippet}("dart_sdk").developer.invokeExtension(
   Future<Breakpoint> setBreakpointState(
           String isolateId, String breakpointId, bool enable) =>
       throw UnimplementedError();
+
+  @override
+  Future<UriList> lookupPackageUris(String isolateId, List<String> uris) {
+    // TODO(https://github.com/dart-lang/webdev/issues/1446): implement.
+    throw UnimplementedError();
+  }
+
+  @override
+  Future<UriList> lookupResolvedPackageUris(
+      String isolateId, List<String> uris) {
+    // TODO(https://github.com/dart-lang/webdev/issues/1446): implement.
+    throw UnimplementedError();
+  }
 }
 
 /// The `type`s of [ConsoleAPIEvent]s that are treated as `stderr` logs.

dwds/pubspec.yaml

@@ -33,7 +33,7 @@ dependencies:
   sse: ^4.1.0
   uuid: '>=2.0.0 <4.0.0'
   # We pin the version because we implement the interface.
-  vm_service: 7.3.0
+  vm_service: 7.4.0
   web_socket_channel: ^2.0.0
   webkit_inspection_protocol: ^1.0.0