chore: bump theme submodule (deprecation API fixes + acronym shortcode)

diff --git a/themes/danix-xyz-hacker b/themes/danix-xyz-hacker
index 175d0fa86ae8cdb78d35e84928655b5324cbc66e..78aec78d7c5977ee4367093b1fd6910e6c6b6cb4 160000 (submodule)
--- a/themes/danix-xyz-hacker
+++ b/themes/danix-xyz-hacker
@@ -1 +1 @@
-Subproject commit 175d0fa86ae8cdb78d35e84928655b5324cbc66e
+Subproject commit 78aec78d7c5977ee4367093b1fd6910e6c6b6cb4