chore: update croner dependency to version 2.2.0 (#6119)

Update croner dependency from 2.0.6 to 2.2.0 as requested in #6118.

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-authored-by: claude[bot] <209825114+claude[bot]@users.noreply.github.com>
Co-authored-by: Ruben Fiszel <[email protected]>
Co-authored-by: Ruben Fiszel <[email protected]>

Author: claude[bot]

backend/windmill-common/Cargo.toml

@@ -83,7 +83,7 @@ strum_macros.workspace = true
 url.workspace = true
 
 semver.workspace = true
-croner = "2.0.6"
+croner = "2.2.0"
 quick_cache.workspace = true
 pin-project-lite.workspace = true
 futures.workspace = true