adapt change in csr matrix interface

Author: gboehl

.github/workflows/continuous-integration.yml

@@ -21,7 +21,7 @@ jobs:
       fail-fast: False
       matrix:
         os: [ubuntu-latest, macos-latest, windows-latest]
-        python-version: ['3.9', '3.10', '3.11']
+        python-version: ['3.10', '3.11', '3.12']
 
     steps:
     - uses: actions/checkout@v3

econpizza/utilities/jacobian.py

@@ -43,7 +43,7 @@ def lu_factor_from_sparse(lu):
     pc = lu.perm_c
     n = len(pr)
     pr = jnp.empty(n, dtype=int).at[pr].set(jnp.arange(n))
-    lu_factor = lu.L.A - jnp.eye(n) + lu.U.A
+    lu_factor = lu.L.todense() - jnp.eye(n) + lu.U.todense()
     return (lu_factor, pr), pc