Update ghcr.io/fluxcd/notification-controller Docker tag to v1.2.3

This MR contains the following updates:

Package	Type	Update	Change
ghcr.io/fluxcd/notification-controller	ironbank-docker	patch	v1.2.2 -> v1.2.3
ghcr.io/fluxcd/notification-controller		patch	v1.2.2 -> v1.2.3
ghcr.io/fluxcd/notification-controller	stage	patch	v1.2.2 -> v1.2.3

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Release Notes

fluxcd/notification-controller

v1.2.3

Compare Source

Changelog

v1.2.3 changelog

Container images

• docker.io/fluxcd/notification-controller:v1.2.3
• ghcr.io/fluxcd/notification-controller:v1.2.3

Supported architectures: linux/amd64, linux/arm64 and linux/arm/v7.

The container images are built on GitHub hosted runners and are signed with cosign and GitHub OIDC. To verify the images and their provenance (SLSA level 3), please see the security documentation.

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