Bump testcontainers.version from 1.20.0 to 1.20.1 #5219

Job	Run time
build-all	3m 13s
tests (es, -Pelasticsearch8, es8-java8, 8)	29m 0s
tests (es, -Pelasticsearch7, es7-java8, 8)	28m 10s
tests (es, -Pelasticsearch6, es6-java8, 8)	27m 54s
tests (es, -Pelasticsearch60, es60-java8, 8)	27m 4s
tests (es, -Pjava-11, -Pelasticsearch8, es8, 11)	30m 38s
tests (es, -Pjava-11, -Pelasticsearch7, es7, 11)	28m 31s
tests (es, -Pjava-11, -Pelasticsearch6, es6, 11)	27m 38s
tests (es, -Pjava-11, -Pelasticsearch60, es60, 11)	26m 58s
	3h 49m 6s

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