Bump external/Catch2 from `997a7d4` to `47d56f2` (#1320)

Bumps [external/Catch2](https://github.com/catchorg/Catch2) from `997a7d4` to `47d56f2`.
- [Release notes](https://github.com/catchorg/Catch2/releases)
- [Commits](997a7d4165...47d56f28a9)

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

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Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
Co-authored-by: saxena-anurag <43585259+saxena-anurag@users.noreply.github.com>

external/Catch2

@@ -1 +1 @@
-Subproject commit 997a7d4165b3939347f1a95f9311a3e3c066ee0b
+Subproject commit 47d56f28a9801911c048d011b375e5631dbb658f