The extra batch to update credenthal helpers

These two topics did not see much interest and reviews while they
were on 'next'; let's "inflict" them to the general public and see
if anybody screams, which is much less nicer way than to merge
only topics that are well reviewed down in an orderly manner, but
that is the only thing we can do to these topics without any
development community help.

Signed-off-by: Junio C Hamano <gitster@pobox.com>

Documentation/RelNotes/2.43.0.txt

@@ -15,6 +15,13 @@ UI, Workflows & Features
  * "git cmd -h" learned to signal which options can be negated by
    listing such options like "--[no-]opt".
 
+ * The way authentication related data other than passwords (e.g.
+   oath token and password expiration data) are stored in libsecret
+   keyrings has been rethought.
+
+ * Update two credential helpers to correctly match which credential
+   to erase; they dropped not the ones with stale password.
+
 
 Performance, Internal Implementation, Development Support etc.