Update to LittleFS v2.3 (#7787)

earlephilhower · web-flow · commit f1dc6e90ee44 · 2020-12-21T21:21:42.000-08:00
Minor performance improvement and LFS_READONLY added, enabling smaller
code for things like eboot should we want to us it in a bootloader/etc.
diff --git a/libraries/LittleFS/lib/littlefs b/libraries/LittleFS/lib/littlefs
@@ -1 +1 @@
-Subproject commit a049f1318eecbe502549f9d74a41951985fb956f
+Subproject commit 1a59954ec64ca168828a15242cc6de94ac75f9d1
