feat(sdk)!: switch to `connect-rpc` for GRPC #929

Job	Run time
mavenverify	1m 19s
SonarCloud Scan	2m 7s
Validate PR title	3s
platform-integration	2m 58s
platform-xtest / resolve-versions	9s
platform-xtest / cross-client-test (main)	10m 39s
ci	1s
	17m 16s

Provide feedback