chore: update CI workflow and refactor imports

- Added a step to install the `protobuf-compiler` in the GitHub Actions workflow.
- Refactored import order in `identity.rs` for consistency.
- Adjusted import order in `group.rs` for improved readability.

Author: vivianjeng

.github/workflows/build-and-test.yml

@@ -33,6 +33,11 @@ jobs:
         with:
           toolchain: stable
           override: true
+      - name: install requirements
+        uses: awalsh128/cache-apt-pkgs-action@v1
+        with:
+          packages: protobuf-compiler
+          version: 1.0
       - name: Run tests
         run: cargo test
 

src/identity.rs

@@ -4,7 +4,7 @@ use crate::{
     baby_jubjub::{BabyJubjubConfig, EdwardsAffine},
     error::SemaphoreError,
 };
-use ark_ec::{CurveConfig, CurveGroup, twisted_edwards::TECurveConfig};
+use ark_ec::{twisted_edwards::TECurveConfig, CurveConfig, CurveGroup};
 use ark_ed_on_bn254::{Fq, Fr};
 use ark_ff::{BigInteger, PrimeField};
 use blake::Blake;

tests/group.rs

@@ -71,7 +71,7 @@ mod group {
     use ark_ed_on_bn254::Fq;
     use ark_ff::{BigInteger, PrimeField};
     use num_bigint::BigInt;
-    use semaphore_rs::group::{EMPTY_ELEMENT, Element, Group};
+    use semaphore_rs::group::{Element, Group, EMPTY_ELEMENT};
     use std::str::FromStr;
 
     fn str_to_element(s: &str) -> Element {