Bump versions.junit from 5.9.2 to 5.9.3 in /examples/distro (#8377)

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examples/distro/build.gradle

@@ -35,7 +35,7 @@ subprojects {
 
       bytebuddy                  : "1.14.4",
       autoservice                : "1.0.1",
-      junit                      : "5.9.2"
+      junit                      : "5.9.3"
     ]
 
     deps = [