[IMP] Fix Rust version in Cargo.toml

Author: fda-odoo

server/Cargo.toml

@@ -6,6 +6,7 @@ authors = ["Odoo"]
 readme = "../README.md"
 repository = "https://github.com/odoo/odoo-ls"
 license = "../LICENSE"
+rust-version = "1.91"
 
 # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html