fix(time): Fix McpError constructor usage in time server

Fixes CI failures in PR #3220.

PR #3220 updated `mcp` library from 1.0.0 to 1.23.0, which caused test
failures due to a breaking change in `McpError` constructor API.

The `McpError` constructor now expects an `ErrorData` object instead of
a plain string message. This commit fixes the usage in `get_zoneinfo()`
function to use `ErrorData(code=INVALID_PARAMS, message=...)`.

```console
Error before fix:
  AttributeError: 'str' object has no attribute 'message'
```

Also updates `mcp` dependency to >=1.23.0 in pyproject.toml to ensure
compatibility with the new API.

src/time/pyproject.toml

@@ -17,10 +17,10 @@ classifiers = [
     "Programming Language :: Python :: 3.10",
 ]
 dependencies = [
-    "mcp>=1.0.0",
+    "mcp>=1.23.0",
     "pydantic>=2.0.0",
     "tzdata>=2024.2",
-    "tzlocal>=5.3.1"
+    "tzlocal>=5.3.1",
 ]
 
 [project.scripts]

src/time/src/mcp_server_time/server.py

@@ -8,7 +8,7 @@ from tzlocal import get_localzone_name  # ← returns "Europe/Paris", etc.
 
 from mcp.server import Server
 from mcp.server.stdio import stdio_server
-from mcp.types import Tool, TextContent, ImageContent, EmbeddedResource
+from mcp.types import Tool, TextContent, ImageContent, EmbeddedResource, ErrorData, INVALID_PARAMS
 from mcp.shared.exceptions import McpError
 
 from pydantic import BaseModel
@@ -54,7 +54,7 @@ def get_zoneinfo(timezone_name: str) -> ZoneInfo:
     try:
         return ZoneInfo(timezone_name)
     except Exception as e:
-        raise McpError(f"Invalid timezone: {str(e)}")
+        raise McpError(ErrorData(code=INVALID_PARAMS, message=f"Invalid timezone: {str(e)}"))
 
 
 class TimeServer: