Add optim module to fortitude linting in static analysis workflow.

Author: jatkinson1000

.github/workflows/static_analysis.yml

@@ -100,6 +100,7 @@ jobs:
           cd ${{ github.workspace }}
           . ftorch_venv/bin/activate
           fortitude check src/ftorch.F90
+          fortitude check src/ftorch_optim.F90
           fortitude check src/ftorch_test_utils.f90
 
       # Apply C++ and C linter and formatter, clang