fix(deps): update dependency google-gax to ^4.4.0 #3305

Job	Run time
lint	27s
build	3m 12s
lib-tests (14.x, showcase)	2m 7s
lib-tests-esm (14.x, showcase)	2m 57s
lib-tests (14.x, kms)	1m 44s
lib-tests-esm (14.x, kms)	2m 36s
lib-tests (14.x, translate)	1m 31s
lib-tests-esm (14.x, translate)	2m 21s
lib-tests (14.x, monitoring)	2m 26s
lib-tests-esm (14.x, monitoring)	3m 33s
lib-tests (14.x, dlp)	2m 21s
lib-tests-esm (14.x, dlp)	2m 52s
lib-tests (14.x, texttospeech)	1m 28s
lib-tests-esm (14.x, texttospeech)	2m 25s
lib-tests (14.x, showcase-legacy)	1m 20s
lib-tests-esm (14.x, showcase-legacy)	2m 25s
lib-tests (14.x, compute)	1m 32s
lib-tests (14.x, logging)	2m 21s
lib-tests-esm (14.x, compute)	2m 16s
lib-tests-esm (14.x, logging)	3m 12s
	45m 6s

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