Bump go.opentelemetry.io/otel/exporters/zipkin from 1.8.0 to 1.18.0 in /utils/tracing/go #1296

Job	Run time
Resolve Modules	4s
GolangCI Lint (./benchmarks/video-analytics)	19s
GolangCI Lint (./benchmarks/chained-function-serving)	24s
GolangCI Lint (./benchmarks/hotel-app)	35s
GolangCI Lint (./benchmarks/gg/benchmarks)	31s
GolangCI Lint (./benchmarks/aes/go)	16s
GolangCI Lint (./benchmarks/chained-function-eventing)	42s
GolangCI Lint (./benchmarks/fibonacci)	18s
GolangCI Lint (./benchmarks/auth/go)	21s
GolangCI Lint (./benchmarks/corral)	24s
GolangCI Lint (./utils/storage/go)	31s
GolangCI Lint (./utils/tracing/integ-tests/client-server/goclient)	15s
GolangCI Lint (./utils/tracing/go)	30s
GolangCI Lint (./utils/protobuf/helloworld)	32s
GolangCI Lint (./tools/endpoint)	6s
GolangCI Lint (./tools/test-client)	22s
GolangCI Lint (./tools/relay)	19s
GolangCI Lint (./tools/trace-plotter)	32s
GolangCI Lint (./tools/benchmarking_eventing)	28s
GolangCI Lint (./tools/invoker)	12s
GolangCI Lint (./tools/invoker/proto)	27s
GolangCI Lint (./tools/deployer)	15s
	8m 23s

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