Install BLAS

Author: eikehmueller

.github/workflows/automated_testing.yml

@@ -19,6 +19,9 @@ jobs:
     steps:
     - uses: actions/checkout@v3
 
+    -name: Install BLAS
+      run: sudo apt-get install -y libblas-dev liblapack-dev
+
     - name: Download Eigen
       run: git clone https://gitlab.com/libeigen/eigen.git; cd eigen; git checkout 5.0