Bump sqren/backport-github-action from 9.3.0 to 9.3.1 #641

Job	Run time
build-all	1m 15s
tests (es, -Pelasticsearch8, es8, 8)	28m 6s
tests (es, -Pelasticsearch7, es7, 8)	27m 27s
tests (es, -Pelasticsearch6, es6, 8)	26m 16s
tests (es, -Pelasticsearch60, es60, 8)	26m 29s
tests (es, -Pjava-11, -Pelasticsearch8, es8, 11)	27m 45s
tests (es, -Pjava-11, -Pelasticsearch7, es7, 11)	27m 31s
tests (es, -Pjava-11, -Pelasticsearch6, es6, 11)	28m 43s
tests (es, -Pjava-11, -Pelasticsearch60, es60, 11)	26m 34s
	3h 40m 6s

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