merge Git submodule updates into master

herzbube · herzbube · commit fa74ff65284f · 2021-02-23T20:27:30.000+01:00
diff --git a/sgfc b/sgfc
@@ -1 +1 @@
-Subproject commit c8f75dccedfc92355975ef06458070e96cdf9871
+Subproject commit b47db6d4d69ab2da4d16dc07bfc1a4c5b127332e
diff --git a/test/Catch2 b/test/Catch2
@@ -1 +1 @@
-Subproject commit de6fe184a9ac1a06895cdd1c9b437f0a0bdf14ad
+Subproject commit 255aa5f2afe1a622c97422f65ace6ca915be0d8d
