chore(release): bump workspace version to 1.20.2

Prepare for v1.20.2 release with fixed auto-update mechanism.

Refs #1874

Author: Test User

Cargo.toml

@@ -44,7 +44,7 @@ exclude = [
 default-members = ["terraphim_server"]
 
 [workspace.package]
-version = "1.20.0"
+version = "1.20.2"
 edition = "2024"
 authors = ["Terraphim Team <team@terraphim.ai>"]
 documentation = "https://terraphim.ai"