[6.18.z] Bump pytest-ibutsu from 3.1.5 to 3.1.6 (#20847)

Author: Satellite-QE

requirements.txt

@@ -21,7 +21,7 @@ pytest-mock==3.15.1
 pytest-reportportal==5.6.0
 pytest-xdist==3.6.1
 pytest-fixturecollection==0.1.2
-pytest-ibutsu==3.1.5
+pytest-ibutsu==3.1.6
 PyYAML==6.0.3
 requests==2.32.5
 tenacity==9.1.4