QL: Bump rust to 1.68

2023-03-16 15:37:25 +13:00 · 2023-03-16 15:37:25 +13:00 · f2fc80b3c1
--- a/ql/rust-toolchain.toml
+++ b/ql/rust-toolchain.toml
@ -2,6 +2,6 @@
 # extractor. It is set to the lowest version of Rust we want to support.

 [toolchain]
-channel = "1.59"
+channel = "1.68"
 profile = "minimal"
 components = [ "rustfmt" ]