Update ACL pin to b7f4a95c4bf27b4507e5b3b9278c249b1feefe36
Update ACL pin to b7f4a95c4bf27b4507e5b3b9278c249b1feefe36

Signed-off-by: Nikhil Raj <70dde441576cd8b053dd4c3a595f3f0b9c7a63a3@arm.com>
Change-Id: I49d1075d73639266d4bcabe3594e79d55a58e881

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