Update versions in pre-commit hooks

This is not strictly needed, but it's good to update the pre-commit hooks versions once in a while.

• clang-format updated to 16.0.3
  • made some changes in the way =s are aligned
• black updated to 23.9.1
  • removed some previously enforced blank lines
• flake8 updated to 6.1.0
  • new E721 (do not compare types, use 'isinstance()') violations detected
• added JSON and Javascript formatting (thanks to clang-format)
• added a few default pre-commit checks (from pre-commit sample-config)
  • fix trailing spaces
  • ensure files end with (1) newline
  • check syntax of YAML files
  • prevent commit of large files