IVGCVSW-5463 Change cmake version for delegate to 3.7
IVGCVSW-5463 Change cmake version for delegate to 3.7

Signed-off-by: Jan Eilers <f1effb43f7b7dacf8209aaa37935f1cffdf56e41@arm.com>
Signed-off-by: Matthew Sloyan <2f616873bb620f765368b5bd03298f46e7990e81@arm.com>
Change-Id: Idb3f9018a22d0f63c0f993fdfd282a1195454ac9

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