build-sys: Opt in to resolver = 2

cgwalters · cgwalters · commit 267c8ecc19d4 · 2023-08-29T18:02:17.000-04:00
This silences a warning from newer Rust.

Signed-off-by: Colin Walters &lt;walters@verbum.org&gt;
diff --git a/Cargo.toml b/Cargo.toml
@@ -1,5 +1,6 @@
 [workspace]
 members = ["cli", "lib", "xtask"]
+resolver = "2"
 
 [profile.dev]
 opt-level = 1 # No optimizations are too slow for us.
