COMPMID-2452: NEInstanceNormalization test tolerance fix

Change-Id: Ibc2a61667fdae0dfc82d402f93492bb0c6283025
Signed-off-by: Manuel Bottini <manuel.bottini@arm.com>
Reviewed-on: https://review.mlplatform.org/c/2106
Tested-by: Arm Jenkins <bsgcomp@arm.com>
Reviewed-by: Michalis Spyrou <michalis.spyrou@arm.com>
diff --git a/tests/validation/NEON/InstanceNormalizationLayer.cpp b/tests/validation/NEON/InstanceNormalizationLayer.cpp
index 68b1eb2..b4be6ba 100644
--- a/tests/validation/NEON/InstanceNormalizationLayer.cpp
+++ b/tests/validation/NEON/InstanceNormalizationLayer.cpp
@@ -43,7 +43,7 @@
 namespace
 {
 /** Tolerance for float operations */
-AbsoluteTolerance<float> tolerance_f32(0.001f);
+AbsoluteTolerance<float> tolerance_f32(0.0015f);
 #ifdef __ARM_FEATURE_FP16_VECTOR_ARITHMETIC
 AbsoluteTolerance<float> tolerance_f16(0.2f);
 #endif // __ARM_FEATURE_FP16_VECTOR_ARITHMETIC