release dart_mcp 2.1.0, require it in dart_mcp_server (#141)

Also renames the workflow file based on the name change of dart_tooling_mcp_server => dart_mcp_server
diff --git a/.github/workflows/dart_tooling_mcp_server.yaml b/.github/workflows/dart_mcp_server.yaml
similarity index 100%
rename from .github/workflows/dart_tooling_mcp_server.yaml
rename to .github/workflows/dart_mcp_server.yaml
diff --git a/pkgs/dart_mcp/CHANGELOG.md b/pkgs/dart_mcp/CHANGELOG.md
index 7ad45d7..2e5da88 100644
--- a/pkgs/dart_mcp/CHANGELOG.md
+++ b/pkgs/dart_mcp/CHANGELOG.md
@@ -1,4 +1,4 @@
-## 0.2.1-wip
+## 0.2.1
 
 - Fix the `protocolLogSink` support when using `MCPClient.connectStdioServer`.
 - Update workflow example to show thinking spinner and input and output token
diff --git a/pkgs/dart_mcp/pubspec.yaml b/pkgs/dart_mcp/pubspec.yaml
index 44dd545..2c5df2d 100644
--- a/pkgs/dart_mcp/pubspec.yaml
+++ b/pkgs/dart_mcp/pubspec.yaml
@@ -1,5 +1,5 @@
 name: dart_mcp
-version: 0.2.1-wip
+version: 0.2.1
 description: A package for making MCP servers and clients.
 repository: https://github.com/dart-lang/ai/tree/main/pkgs/dart_mcp
 issue_tracker: https://github.com/dart-lang/ai/issues?q=is%3Aissue+is%3Aopen+label%3Apackage%3Adart_mcp
diff --git a/pkgs/dart_mcp_server/pubspec.yaml b/pkgs/dart_mcp_server/pubspec.yaml
index 3eacc6a..5b257e4 100644
--- a/pkgs/dart_mcp_server/pubspec.yaml
+++ b/pkgs/dart_mcp_server/pubspec.yaml
@@ -15,7 +15,7 @@
 dependencies:
   args: ^2.7.0
   async: ^2.13.0
-  dart_mcp: ^0.2.0
+  dart_mcp: ^0.2.1
   dds_service_extensions: ^2.0.1
   devtools_shared: ^11.2.0
   dtd: ^2.4.0