Bump org.easymock:easymock from 5.3.0 to 5.4.0 #1930

Job	Run time
build-all	3m 26s
tests (scylla, -Pscylla-murmur -Dtest="*/diskstorage/cql/", murmur-diskstorage-java8, 8)	15m 9s
tests (scylla, -Pscylla-murmur -Dtest="*/graphdb/cql/", murmur-graphdb-java8, 8)	56m 4s
tests (scylla, -Pscylla-murmur -Dtest="*/hadoop/", murmur-hadoop-java8, 8)	11m 50s
tests (scylla, -Pscylla-murmur -Dtest="*/core/cql/", murmur-core-java8, 8)	4m 16s
tests (scylla, -Pscylla-murmur -Dtest="*/diskstorage/cql/", murmur-diskstorage, -Pjava-11, 11)	15m 11s
tests (scylla, -Pscylla-murmur -Dtest="*/graphdb/cql/", murmur-graphdb, -Pjava-11, 11)	55m 22s
tests (scylla, -Pscylla-murmur -Dtest="*/hadoop/", murmur-hadoop, -Pjava-11, 11)	11m 39s
tests (scylla, -Pscylla-murmur -Dtest="*/core/cql/", murmur-core, -Pjava-11, 11)	4m 15s
	2h 57m 12s

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