Merge pull request #1159 from lioncash/fmt

externals: Update fmt to 6201052

externals/fmt

@@ -1 +1 @@
-Subproject commit c2ce7e4f07f7b34b2c7bbd0a4d0798b1d7007f4f
+Subproject commit 62010520edc734df16c48f9dbb238143279abd7a