[Bugfix][CI][CPU] add missing datasets package to requirements-cpu.txt (#11159)

Signed-off-by: jiang1.li <[email protected]>

Author: bigPYJ1151

requirements-cpu.txt

@@ -4,4 +4,5 @@
 # Dependencies for CPUs
 torch==2.5.1+cpu; platform_machine != "ppc64le" and platform_machine != "aarch64" 
 torch==2.5.1; platform_machine == "aarch64"
-torchvision; platform_machine != "ppc64le"  # required for the image processor of phi3v, this must be updated alongside torch
+torchvision; platform_machine != "ppc64le"  # required for the image processor of phi3v, this must be updated alongside torch
+datasets # for benchmark scripts