feat(sdk)!: switch to `connect-rpc` for GRPC #928

Job	Run time
platform-integration	3m 1s
mavenverify	1m 19s
SonarCloud Scan	1m 50s
Validate PR title	2s
platform-xtest / resolve-versions	8s
platform-xtest / cross-client-test (main)	10m 47s
ci	1s
	17m 8s

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