Update dependency gradle to v7.6.4 #979

Job	Run time
core-tests	2m 10s
core-tests	2m 12s
build	0s
build	0s
functional-test (static)	1m 26s
functional-test (static)	12s
functional-test (annotation)	1m 37s
functional-test (annotation)	1m 57s
functional-test (requestmap)	1m 23s
functional-test (requestmap)	1s
functional-test (basic)	1m 34s
functional-test (basic)	1m 7s
functional-test (basicCacheUsers)	1m 36s
functional-test (basicCacheUsers)	1s
functional-test (misc)	1m 36s
functional-test (misc)	1s
functional-test (putWithParams)	1m 27s
functional-test (putWithParams)	1s
functional-test (bcrypt)	47s
functional-test (bcrypt)	58s
functional-test (issue503)	45s
functional-test (issue503)	1s
	20m 52s

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