Bump Rust in CI as well

Author: sbernauer

.github/workflows/build.yml

@@ -18,7 +18,7 @@ env:
   CARGO_TERM_COLOR: always
   CARGO_INCREMENTAL: '0'
   CARGO_PROFILE_DEV_DEBUG: '0'
-  RUST_TOOLCHAIN_VERSION: "1.78.0"
+  RUST_TOOLCHAIN_VERSION: "1.93.0"
   RUSTFLAGS: "-D warnings"
   RUSTDOCFLAGS: "-D warnings"
   RUST_LOG: "info"