Fix Auth changelog for 10.14.0 (#11700)

Author: paulb777

FirebaseAuth/CHANGELOG.md

@@ -1,5 +1,7 @@
-# 10.13.0
+# 10.14.0
 - [added] Added reCAPTCHA verification support in email authentication flows. (#11231)
+
+# 10.13.0
 - [fixed] Fixed a compilation error regression introduced in 10.12.0 building iOS App Extensions. (#11537)
 
 # 10.12.0