Bump go.opentelemetry.io/contrib/instrumentation/net/http/otelhttp from 0.45.0 to 0.46.1 in /config/confighttp #806

Job	Run time
govulncheck	1m 18s
setup-environment	24s
lint	1m 26s
checks	32s
cross-build-collector (darwin, amd64)	16s
test-coverage	1m 25s
cross-build-collector (darwin, arm64)	7s
unittest-matrix (~1.21.3)	1m 19s
cross-build-collector (linux, 386)	10s
unittest-matrix (~1.20.10)	1m 24s
cross-build-collector (linux, amd64)	12s
cross-build-collector (linux, arm64)	7s
cross-build-collector (linux, ppc64le)	7s
cross-build-collector (linux, arm, 7)	13s
cross-build-collector (linux, s390x)	10s
cross-build-collector (windows, 386)	9s
cross-build-collector (windows, amd64)	11s
unittest	1s
	9m 31s

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