Updated toolchains submodule.

doc/changelog.dox

@@ -1046,6 +1046,10 @@ See also:
     specify `-s EXPORTED_FUNCTIONS` on their side. See [mosra/magnum#619](https://github.com/mosra/magnum/issues/619).
 -   Fixed build of @ref Platform::EmscriptenApplication on Emscripten 3.1.49
     and newer (see [mosra/magnum#631](https://github.com/mosra/magnum/issues/631))
+-   The Emscripten toolchain no longer uses a `*.bc` extension for static
+    libraries, as that breaks builds with version 3.1.52+. See
+    [mosra/magnum#633](https://github.com/mosra/magnum/issues/633) for more
+    information.
 
 @subsection changelog-latest-bugfixes Bug fixes
 

toolchains

@@ -1 +1 @@
-Subproject commit 2149f703ac890afade1ca9fd042ba82478f41d1c
+Subproject commit 7c5e5047b3afd3f7a8292d8458d3c347ce265078