update rust version

scripts/build-opnsense.sh

@@ -29,6 +29,7 @@ export CARGO_TARGET_X86_64_UNKNOWN_FREEBSD_RUSTFLAGS="-C link-arg=--target=x86_6
 
 log "cross-compiling $BINARY_NAME for x86_64-unknown-freebsd${FREEBSD_TARGET_VERSION}"
 cd "$BUILD_SOURCE"
+FREEBSD_RUST_TOOLCHAIN=$(/opt/rust-package-builder/scripts/ensure-rust-toolchain.sh "$BUILD_SOURCE" freebsd)
 if [[ -f Cargo.lock ]]; then
     cargo "+$FREEBSD_RUST_TOOLCHAIN" build --release --locked --target x86_64-unknown-freebsd
 else