changing ubuntu release

Author: jpmorgan98

.github/workflows/error_mpi4py.yml

@@ -8,7 +8,7 @@ jobs:
     strategy:
         fail-fast: false
         matrix:
-            os: ["ubuntu-latest"]
+            os: ["ubuntu-22.04"]
     steps:
     - uses: actions/checkout@v3
     - name: Set up python 3.11
@@ -31,4 +31,4 @@ jobs:
         mpirun -n 4 python -m mpi4py.bench helloworld
 
         mpirun -n 4 python test_mpi.py
-        mpirun -n 2 python test_mpi.py
+        mpirun -n 2 python test_mpi.py