Bump Sparkle to latest master

hannesa2 · hannesa2 · commit ec9b5b9872fd · 2021-01-28T07:20:32.000+01:00
It includes a target update to 10.9
diff --git a/External/Sparkle b/External/Sparkle
@@ -1 +1 @@
-Subproject commit d5222353e6d6ee7baf4c18711e5b897fe2ed886a
+Subproject commit 0b682d3349ddb51a4c42153eaae94e937be5935a
