Bump minimum Rust version to 1.89

lionel- · lionel- · commit af8b0849c0ab · 2025-12-15T10:39:24.000+01:00
diff --git a/Cargo.toml b/Cargo.toml
@@ -19,7 +19,7 @@ members = [
 ]
 
 [workspace.package]
-rust-version = "1.85"
+rust-version = "1.89"
 edition = "2021"
 license = "MIT"
 authors = ["Posit Software, PBC"]
