Update gradle to v8 (#554) #1155

Job	Run time
build-python (ubuntu-latest)	21s
build-go (ubuntu-latest)	12s
build-java (ubuntu-latest)	54s
build-ts (ubuntu-latest)	20s
build-dotnet (ubuntu-latest)	21s
feature-tests-ts / test	1m 54s
feature-tests-java / test	1m 53s
feature-tests-go / test	2m 0s
build-docker-images / build-php-docker-images	0s
feature-tests-dotnet / test	1m 12s
feature-tests-python / test	1m 30s
build-docker-images / build-dotnet-docker-images / Build cs docker image	2m 39s
build-docker-images / build-java-docker-images / Build java docker image	4m 24s
build-docker-images / build-go-docker-images / Build go docker image	5m 46s
build-docker-images / build-python-docker-images / Build py docker image	3m 30s
build-docker-images / build-ts-docker-images / Build ts docker image	5m 5s
	32m 1s

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