build(deps): point anki submodule to ankidroid org fork

You will need to do these things to take advantage of this if you
have a local checkout already. All commands performed from repo root:

rm -rf .git/modules/anki
rm -rf rslib-bridge/anki
git submodule sync
git submodule update

A clean checkout will work assuming you follow procedure to checkout / init
submodules during checkout as documented for the repo

.gitmodules

@@ -1,4 +1,4 @@
 [submodule "anki"]
 	path = rslib-bridge/anki
-	url = https://github.com/david-allison-1/anki
-	branch = ankidroid-2-1-34
+	url = https://github.com/ankidroid/anki
+	branch = ankidroid-2-1-34