build(deps): bump go.opentelemetry.io/contrib/instrumentation/google.golang.org/grpc/otelgrpc from 0.49.0 to 0.50.0 in /tools/invoker #1863

Job	Run time
Resolve Modules	2s
GolangCI Lint (./benchmarks/spinning/go)	19s
GolangCI Lint (./benchmarks/sleeping/go)	18s
GolangCI Lint (./benchmarks/fibonacci)	25s
GolangCI Lint (./benchmarks/video-analytics)	15s
GolangCI Lint (./benchmarks/chained-function-eventing)	11s
GolangCI Lint (./benchmarks/gg/benchmarks)	31s
GolangCI Lint (./benchmarks/auth/go)	11s
GolangCI Lint (./benchmarks/aes/go)	18s
GolangCI Lint (./benchmarks/corral)	43s
GolangCI Lint (./benchmarks/chained-function-serving)	21s
GolangCI Lint (./benchmarks/hotel-app)	12s
GolangCI Lint (./utils/storage/go)	28s
GolangCI Lint (./utils/protobuf/helloworld)	30s
GolangCI Lint (./utils/tracing/go)	39s
GolangCI Lint (./utils/tracing/integ-tests/client-server/goclient)	13s
GolangCI Lint (./tools/deployer)	19s
GolangCI Lint (./tools/relay)	12s
GolangCI Lint (./tools/endpoint)	7s
GolangCI Lint (./tools/trace-plotter)	29s
GolangCI Lint (./tools/test-client)	26s
GolangCI Lint (./tools/invoker)	27s
GolangCI Lint (./tools/invoker/proto)	23s
GolangCI Lint (./tools/benchmarking_eventing)	31s
	8m 30s

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