cast into PosixPath to str before writing to file

.github/workflows/full-regression.yml

@@ -81,8 +81,6 @@ jobs:
     # restrict to official LAMMPS repository
     if: ${{ github.repository == 'lammps/lammps' }}
     runs-on: ubuntu-latest
-    env:
-      CCACHE_DIR: ${{ github.workspace }}/.ccache
     strategy:
       max-parallel: 2
       matrix:

tools/regression-tests/get-quick-list.py

@@ -264,7 +264,7 @@ if __name__ == "__main__":
         with open('input_list.txt', 'w') as f:
             for inp in inputs:
                 print(inp)
-                f.write(inp + '\n')
+                f.write(str(inp) + '\n')
 
     print("Found changes to the following styles:")
     print("Commands: ", styles['command'])