Update build.yml

Author: haochengxia

.github/workflows/build.yml

@@ -36,6 +36,8 @@ jobs:
         run: cmake -B ${{github.workspace}}/build -DCMAKE_BUILD_TYPE=${{env.BUILD_TYPE}}
       - name: Build
         run: cmake --build ${{github.workspace}}/build --config ${{env.BUILD_TYPE}}
+      - name: Run tests under Valgrind
+        run: valgrind --leak-check=full --error-exitcode=1 ${{github.workspace}}/build/bin/cachesim ${{github.workspace}}/data/twitter_cluster52.csv csv 0.1 s3fifo
       - name: Test
         working-directory: ${{github.workspace}}/build
         run: ctest -C ${{env.BUILD_TYPE}}