font-awesome: Update to 6.7.2

Signed-off-by: Michael Tremer <michael.tremer@ipfire.org>

diff --git a/src/font-awesome b/src/font-awesome
index f0c25837a3fe0e03783b939559e088abcbfb3c4b..af620534bfc3c2d4cbefcfeec29603bbe7809e64 160000 (submodule)
--- a/src/font-awesome
+++ b/src/font-awesome
@@ -1 +1 @@
-Subproject commit f0c25837a3fe0e03783b939559e088abcbfb3c4b
+Subproject commit af620534bfc3c2d4cbefcfeec29603bbe7809e64