Bump go.opentelemetry.io/otel/exporters/otlp/otlpmetric/otlpmetrichttp from 0.42.0 to 0.44.0 in /service #798

Job	Run time
govulncheck	1m 6s
setup-environment	29s
lint	1m 20s
unittest-matrix (~1.21.3)	1m 32s
checks	24s
unittest-matrix (~1.20.10)	1m 27s
cross-build-collector (darwin, amd64)	8s
test-coverage	1m 30s
cross-build-collector (darwin, arm64)	12s
cross-build-collector (linux, 386)	21s
cross-build-collector (linux, amd64)	12s
cross-build-collector (linux, arm64)	7s
cross-build-collector (linux, ppc64le)	15s
cross-build-collector (linux, arm, 7)	15s
cross-build-collector (linux, s390x)	11s
cross-build-collector (windows, 386)	8s
cross-build-collector (windows, amd64)	11s
unittest	1s
	9m 49s

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