Update 2.16.9 release notes: add reference to Issue 10359
Update 2.16.9 release notes: add reference to Issue 10359

I believe this entry referenced change 227271 [1], which fixes
Issue 10359.

[1]: https://gerrit-review.googlesource.com/c/gerrit/+/227271

Change-Id: Icdd833ccd9b9acbbfee3963f53373ccefe682b65

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