chore: update version metadata to 0.3.7 in cargo.toml

- update the version from `0.3.6` to `0.3.7` in the `mithril-common` package metadata in `cargo.toml`

Author: falcucci

Cargo.lock

@@ -1,6 +1,6 @@
 [package]
 name = "mithril-common"
-version = "0.3.6"
+version = "0.3.7"
 description = "Common types, interfaces, and utilities for Mithril nodes."
 authors = { workspace = true }
 edition = { workspace = true }