Bump go.opentelemetry.io/contrib/zpages from 0.45.0 to 0.46.1 in /extension/zpagesextension #822

Job	Run time
govulncheck	1m 9s
setup-environment	31s
checks	28s
test-coverage	1m 26s
lint	1m 26s
cross-build-collector (darwin, amd64)	13s
cross-build-collector (darwin, arm64)	12s
cross-build-collector (linux, 386)	14s
unittest-matrix (~1.21.3)	1m 19s
cross-build-collector (linux, amd64)	11s
unittest-matrix (~1.20.10)	1m 23s
cross-build-collector (linux, arm64)	17s
cross-build-collector (linux, ppc64le)	10s
cross-build-collector (linux, arm, 7)	9s
cross-build-collector (linux, s390x)	15s
cross-build-collector (windows, 386)	10s
cross-build-collector (windows, amd64)	11s
unittest	1s
	9m 45s

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