Reflect included IJG licensed work in crate metadata

Author: decathorpe

Cargo.toml

@@ -3,7 +3,7 @@ name = "jpeg-encoder"
 version = "0.6.0"
 authors = ["Volker Ströbel <[email protected]>"]
 edition = "2021"
-license = "MIT OR Apache-2.0"
+license = "(MIT OR Apache-2.0) AND IJG"
 description = "JPEG encoder"
 categories = ["multimedia::images"]
 keywords = ["jpg", "jpeg", "encoder", "image"]