Bump Bazel build to rustc 1.93.0

Author: dtolnay

MODULE.bazel

@@ -13,7 +13,7 @@ bazel_dep(name = "rules_cc", version = "0.2.14")
 bazel_dep(name = "rules_rust", version = "0.68.1")
 
 rust = use_extension("@rules_rust//rust:extensions.bzl", "rust")
-rust.toolchain(versions = ["1.92.0"])
+rust.toolchain(versions = ["1.93.0"])
 use_repo(rust, "rust_toolchains")
 
 register_toolchains("@rust_toolchains//:all")