chore: bump version to 0.7.0

Author: WenyXu

Cargo.toml

@@ -17,7 +17,7 @@
 
 [package]
 name = "orc-rust"
-version = "0.6.3"
+version = "0.7.0"
 edition = "2021"
 homepage = "https://github.com/datafusion-contrib/orc-rust"
 repository = "https://github.com/datafusion-contrib/orc-rust"