Update module go.opentelemetry.io/contrib/otelconf to v0.16.0 (#13098) #30818

Job	Run time
govulncheck	56s
setup-environment	24s
checks	3m 13s
unittest-matrix (ubuntu-latest, ~1.24)	6m 35s
lint	5m 36s
unittest-matrix (ubuntu-latest, ~1.23)	6m 47s
test-coverage	11m 47s
cross-build-collector (linux, 386)	59s
cross-build-collector (aix, ppc64)	1m 17s
cross-build-collector (darwin, arm64)	1m 11s
cross-build-collector (linux, ppc64le)	1m 2s
cross-build-collector (linux, arm, 7)	1m 11s
cross-build-collector (darwin, amd64)	1m 10s
cross-build-collector (windows, 386)	1m 10s
cross-build-collector (windows, amd64)	1m 12s
cross-build-collector (linux, s390x)	1m 4s
cross-build-collector (linux, amd64)	1m 9s
cross-build-collector (linux, arm64)	1m 23s
unittest	4s
	48m 10s

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