chore(deps): Bump mockito from 5.21.0 to 5.22.0 in /pbj-core/hiero-dependency-versions (#745)

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pbj-core/hiero-dependency-versions/build.gradle.kts

@@ -7,7 +7,7 @@ val helidon = "4.3.4"
 val protobuf = "4.34.0"
 
 val junit5 = "6.0.3"
-val mockito = "5.21.0"
+val mockito = "5.22.0"
 
 dependencies { api(platform("io.netty:netty-bom:4.2.10.Final")) }