Update Catch module on Wheeler

[knelli2]

The previous module was built in c++11 mode, but we need Catch in c++17 mode.

Proposed changes

Upgrade instructions

Code review checklist

• The code is documented and the documentation renders correctly. Run
  make doc to generate the documentation locally into BUILD_DIR/docs/html.
  Then open index.html.
• The code follows the stylistic and code quality guidelines listed in the
  code review guide.
• The PR lists upgrade instructions and is labeled bugfix or
  new feature if appropriate.

Further comments

[nilsdeppe]

Thanks for the PR :)

[nilsdeppe]

Merging now since we can't check this in CI and tests aren't compiling on Wheeler :(