[stable-2.8] Pin psutil version in pids test (#70716)

test/integration/targets/pids/tasks/main.yml

@@ -3,10 +3,10 @@
 # GNU General Public License v3.0+ (see COPYING or https://www.gnu.org/licenses/gpl-3.0.txt)
 - name: "Installing the psutil module"
   pip:
-    name: psutil
+    name: psutil==5.6.7
 
-- name: "Checking the empty result" 
+- name: "Checking the empty result"
-  pids: 
+  pids:
     name: "blahblah"
   register: emptypids
 
@@ -14,7 +14,7 @@
   assert:
     that:
     - emptypids is not changed
-    - emptypids.pids == [] 
+    - emptypids.pids == []
 
 - name: "Picking a random process name"
   command: "echo 'some-random-long-name-{{ 99999999 | random }}'"