ci updates

This batch is solely to unbreak the 32-bit CI jobs that can no
longer work with Ubuntu xenial image that is too ancient.

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

Documentation/RelNotes/2.47.0.txt

@@ -136,6 +136,10 @@ Performance, Internal Implementation, Development Support etc.
  * "git cat-file" works well with the sparse-index, and gets marked as
  such.
 
+ * CI started failing completely for linux32 jobs, as the step to
+ upload failed test directory uses GitHub actions that is deprecated
+ and is now disabled.
+
 
 Fixes since v2.46
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