[roll recipes_version.txt] checkout: Always update initialized submodules

Always update initialized submodules in the cache. We may not be
including submodules in the current checkout, but they could be there
from a past use of this cache, and could be out of date. Instead of
deinitializing them, update them. Presumably they're not too far out of
date, so this should be a pretty cheap operation.

Original-Reviewed-on: https://pigweed-review.googlesource.com/c/infra/recipes/+/89340

https://pigweed.googlesource.com/infra/recipes
recipes_version.txt Rolled-Commits: 0e13b6c8f2a253b..20c98232572eae6

GitOrigin-RevId: 889f31fd129fa82d04361c01f6f10170455f9a7c
Change-Id: Ife33acd1798dc14372b2b136d3c451fad919ff5a
diff --git a/recipes_version.txt b/recipes_version.txt
index 901f2cf..cf041ff 100644
--- a/recipes_version.txt
+++ b/recipes_version.txt
@@ -1 +1 @@
-0e13b6c8f2a253b1f037b8e232f8b2076bb8c5ec
\ No newline at end of file
+20c98232572eae6b81cf105ffa38352fe1fde962
\ No newline at end of file