Update to SdFat 2.1.0 with UTF-8 support

earlephilhower · earlephilhower · commit 3be51705d7bd · 2021-10-31T09:52:42.000-07:00
diff --git a/libraries/ESP8266SdFat b/libraries/ESP8266SdFat
@@ -1 +1 @@
-Subproject commit 9472c8614033efdaa6064906e7065963581746af
+Subproject commit e7ddd0582f857163b81e4d21176997868e957c60
