Fix pyarmnn Unittest failure in Master
Fix pyarmnn Unittest failure in Master

* Update more-itertools to 8.12

Signed-off-by: Nikhil Raj <70dde441576cd8b053dd4c3a595f3f0b9c7a63a3@arm.com>
Change-Id: I572340793db0e7da993679466d723c61d6d2bab2

ARM-software/armnn,ARM-software/armnn,ARM-software/armnn