Merge pull request #3866 from Shopify/vs_add_license_to_crates

Add `license` identifier to Rust crates

Author: Earlopain

rust/ruby-prism-sys/Cargo.toml

@@ -2,6 +2,7 @@
 name = "ruby-prism-sys"
 version = "1.8.0"
 edition = "2021"
+license = "MIT"
 license-file = "../../LICENSE.md"
 repository = "https://github.com/ruby/prism"
 description = "Rust bindings to Ruby's prism parsing library"

rust/ruby-prism/Cargo.toml

@@ -2,6 +2,7 @@
 name = "ruby-prism"
 version = "1.8.0"
 edition = "2021"
+license = "MIT"
 license-file = "../../LICENSE.md"
 repository = "https://github.com/ruby/prism"
 description = "Rustified version of Ruby's prism parsing library"