Bump k8s.io/client-go from 0.29.3 to 0.32.1 in /internal/signalfx-agent #12042

Job	Run time
setup-environment	1m 49s
generate-metrics	36s
lint	55s
coverage	42s
cross-compile (binaries-darwin_amd64)	27s
gofmt	35s
cross-compile (binaries-darwin_arm64)	27s
test	1m 6s
tidy	1m 17s
cross-compile (binaries-linux_amd64)	28s
cross-compile (binaries-linux_arm64)	28s
cross-compile (binaries-windows_amd64)	27s
cross-compile (binaries-linux_ppc64le)	28s
	9m 45s

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