Update quay.io/metallb/speaker Docker tag to v0.14.4

This MR contains the following updates:

Package	Type	Update	Change
quay.io/metallb/speaker		patch	v0.14.3 -> v0.14.4
quay.io/metallb/speaker	ironbank-docker	patch	v0.14.3 -> v0.14.4
quay.io/metallb/speaker	stage	patch	v0.14.3 -> v0.14.4

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Release Notes

metallb/metallb (quay.io/metallb/speaker)

v0.14.4

Compare Source

See https://metallb.universe.tf/release-notes/ for details

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