Updates hydra: 16f5d96 Feat: docs: migrate to mkdocs-material

diff --git a/hydra b/hydra
index 3d9ef7ae6af15a21129c2f3b165ca192adbcd413..16f5d9643ae3b9b4aba73cadc298b663b13ac030 160000 (submodule)
--- a/hydra
+++ b/hydra
@@ -1 +1 @@
-Subproject commit 3d9ef7ae6af15a21129c2f3b165ca192adbcd413
+Subproject commit 16f5d9643ae3b9b4aba73cadc298b663b13ac030