Update GH action

.github/workflows/run_benchmarks.yml

@@ -11,6 +11,9 @@ env:
 jobs:
   benchmark-tests:
     runs-on: ubuntu-latest
+    default:
+      run:
+        working-directory: ${{ github.workspace }}/bench
     steps:
       - uses: actions/checkout@v4
       - uses: software-mansion/setup-scarb@v1
@@ -27,24 +30,23 @@ jobs:
           override: true
           components: rustfmt, clippy
       - uses: baptiste0928/cargo-install@v1
-        working-directory: ${{ github.workspace }}/bench
+
         with:
           crate: cargo-nextest
           locked: true
       - name: Cargo clean
-        working-directory: ${{ github.workspace }}/bench
+
         run: cargo clean
       - name: Delete Cargo.lock
-        working-directory: ${{ github.workspace }}/bench
+
         run: rm -f Cargo.lock
       - name: Install Risc0 toolchain
-        working-directory: ${{ github.workspace }}/bench
+
         run: |
           cargo install cargo-binstall
           yes | cargo binstall cargo-risczero
           cargo risczero install
       - name: Install Rust jupyter kernel
-        working-directory: ${{ github.workspace }}/bench
         run: |
           cargo install evcxr_jupyter
           evcxr_jupyter --install
@@ -58,20 +60,19 @@ jobs:
           tar -xzf ezkl.tar.gz
           mv ezkl /usr/local/bin/  # Move the binary to a directory in your PATH
       - name: Setup Virtual Env
-        working-directory: ${{ github.workspace }}/bench
         run: python -m venv .env; source .env/bin/activate;
       - name: Run linear regression benchmarks across all frameworks
-        working-directory: ${{ github.workspace }}/bench
+
         run: source .env/bin/activate; cargo nextest run benchmarking_tests::tests::run_benchmarks_::tests_0 --test-threads 1
       - name: Run randsom forest benchmarks across all frameworks
-        working-directory: ${{ github.workspace }}/bench
+
         run: source .env/bin/activate; cargo nextest run benchmarking_tests::tests::run_benchmarks_::tests_1 --test-threads 1
       - name: Run svm classification benchmarks across all frameworks
-        working-directory: ${{ github.workspace }}/bench
+
         run: source .env/bin/activate; cargo nextest run benchmarking_tests::tests::run_benchmarks_::tests_2 --test-threads 1
       - name: Run tree ensemble regression benchmarks across all frameworks
-        working-directory: ${{ github.workspace }}/bench
+
         run: source .env/bin/activate; cargo nextest run benchmarking_tests::tests::run_benchmarks_::tests_3 --test-threads 1
       - name: Pretty Print benchmarks.json
-        working-directory: ${{ github.workspace }}/bench
+
         run: jq '.' benchmarks.json # Pretty print the benchmarks.json file