Bump external/Catch2 from `f526ff0` to `9dc2296` (#1017)

Bumps [external/Catch2](https://github.com/catchorg/Catch2) from `f526ff0` to `9dc2296`.
- [Release notes](https://github.com/catchorg/Catch2/releases)
- [Commits](f526ff0fc3...9dc229693d)

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

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external/Catch2

@@ -1 +1 @@
-Subproject commit f526ff0fc37ae00ff2c0dc8f6550bf8209c30afc
+Subproject commit 9dc229693d7035b2a09057d578a69d97afc8e572