Update version format in pyproject.toml from "0.4.0-rc1" to "0.4.0rc1" for consistency with release naming conventions. (#43)

Author: nithishr

pyproject.toml

@@ -1,6 +1,6 @@
 [project]
 name = "couchbase-mcp-server"
-version = "0.4.0-rc1"
+version = "0.4.0rc1"
 description = "Couchbase MCP Server - The Developer Data Platform for Critical Applications in Our AI World"
 readme = "README.md"
 requires-python = ">=3.10"