Use env time to bypass built-in time instead of /usr/bin

Main changes of this PR

which is more robust if time is not installed (disk-less mode on some HPC systems) and time is not installed in /usr

[ ] I used the pre-commit hook and used pre-commit run --all to apply all available hooks.
[ ] I added a test to cover the proposed changes in our test suite.
[ ] I updated the documentation in docs/README.md.
[ ] I updated potential breaking changes in the tutorial precice/tutorials/aste-turbine.