Update build.yaml

Author: MMathisLab

.github/workflows/build.yaml

@@ -46,6 +46,7 @@ jobs:
         run: |
           python -m pip install git+https://github.com/RobustBench/robustbench.git
           python -m pip install --upgrade pip setuptools wheel
+          python -m pip install -U packaging
           python -m pip install torch==${{ matrix.torch-version }} --extra-index-url https://download.pytorch.org/whl/cpu
           pip install '.[dev]'
       
@@ -62,4 +63,4 @@ jobs:
       - name: Check reinstall script
         timeout-minutes: 3
         run: |
-          ./reinstall.sh
+          ./reinstall.sh