fix(deps): update dependency grpcio to v1.70.0

[renovate]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
grpcio (source)	1.69.0 -> 1.70.0

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Release Notes

grpc/grpc (grpcio)

v1.70.0

Compare Source

This is release 1.70.0 (genius) of gRPC Core.

For gRPC documentation, see grpc.io. For previous releases, see Releases.

This release contains refinements, improvements, and bug fixes, with highlights listed below.

Core

• [BoringSSL] Update third_party/boringssl-with-bazel. (#​38274)

C++

• gRPC C++ begins to require C++17 or later to build and use gRPC C++. You may need the following settings
  • CMake: Add CMAKE_CXX_STANDARD=17 to your CMake build command.
  • Bazel: Add --cxxopt='/std:c++17' and --host_cxxopt='/std:c++17' to your Bazel build command.

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Configuration

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This PR was generated by Mend Renovate. View the repository job log.

[coveralls]

Pull Request Test Coverage Report for Build 12936044642

Details

• 0 of 0 changed or added relevant lines in 0 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage remained the same at 96.426%

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Totals
Change from base Build 12875416066:	0.0%
Covered Lines:	1295
Relevant Lines:	1343

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💛 - Coveralls