[BUILD] Fixes grpc linking for OTLP exporter's tests #534

Job	Run time
Windows 2025 vcpkg submodule versions cxx20 (static libs)	1h 11m 8s
Windows 2022 vcpkg submodule versions cxx17 (static libs - dll)	1h 12m 11s
Ubuntu 24.04 apt packages cxx17 (static libs - shared libs)	18m 41s
Ubuntu 24.04 conan latest versions cxx17 (static libs - shared libs)	51m 53s
Ubuntu 24.04 conan latest w/shared protobuf and grpc (shared libs)	39m 37s
macOS 14 conan stable versions cxx17 (static libs)	17m 19s
macOS 14 brew latest versions cxx17 (static libs)	7m 43s
Ubuntu 24.04 latest versions cxx20 (static libs)	40m 43s
Ubuntu 22.04 minimum versions cxx14 (static libs - shared libs)	27m 50s
Ubuntu 22.04 stable versions cxx17 (static libs - shared libs)	37m 23s
Ubuntu 24.04 conan stable versions cxx17 (static libs - shared libs - opentracing shim)	42m 8s
	7h 6m 36s

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