Bump external/Catch2 from a40dd47 to 33e24b1

Bumps [external/Catch2](https://github.com/catchorg/Catch2) from `a40dd47` to `33e24b1`.
- [Release notes](https://github.com/catchorg/Catch2/releases)
- [Commits](catchorg/Catch2@a40dd47...33e24b1)

---
updated-dependencies:
- dependency-name: external/Catch2
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <[email protected]>