Bump external/Catch2 from `7b93a20` to `f526ff0` (#1002)

Bumps [external/Catch2](https://github.com/catchorg/Catch2) from `7b93a20` to `f526ff0`.
- [Release notes](https://github.com/catchorg/Catch2/releases)
- [Commits](7b93a2014c...f526ff0fc3)

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

Signed-off-by: dependabot[bot] <support@github.com>

Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
Co-authored-by: Alan Jowett <alanjo@microsoft.com>

external/Catch2

@@ -1 +1 @@
-Subproject commit 7b93a2014cb417d277339e3d679cac64bfac237b
+Subproject commit f526ff0fc37ae00ff2c0dc8f6550bf8209c30afc