feat(sdk)!: switch to `connect-rpc` for GRPC #925

Job	Run time
SonarCloud Scan	2m 13s
platform-integration	4m 9s
Validate PR title	7s
mavenverify	1m 17s
platform-xtest / resolve-versions	7s
platform-xtest / cross-client-test (main)	12m 23s
ci	1s
	20m 17s

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