chore(deps): update flux

This MR contains the following updates:

Package	Update	Change
registry1.dso.mil/ironbank/fluxcd/helm-controller (source)	patch	v1.4.2 -> v1.4.5
registry1.dso.mil/ironbank/fluxcd/kustomize-controller (source)	patch	v1.7.1 -> v1.7.3
registry1.dso.mil/ironbank/fluxcd/notification-controller (source)	patch	v1.7.3 -> v1.7.5
registry1.dso.mil/ironbank/fluxcd/source-controller (source)	patch	v1.7.2 -> v1.7.4

Closes #2931 (closed)

Complete MR checklist

Assignee

• Followed upgrade instructions outlined in docs/DEVELOPMENT_MAINTENANCE.md
• Update Docs with new/updated steps as needed
• Tested and Validated Changes made with supporting info like logs or screenshots from test pipelines

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• Tested and Validated changes

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This MR was automatically generated by Renovate Bot.

Upgrade Notices

Update your Flux CLI to the latest version possible based on available IB images. Note, if installing with homebrew on mac, use command brew upgrade fluxcd/tap/flux. This specific tap is needed to grab the latest version.

Package	Update	Change
registry1.dso.mil/ironbank/fluxcd/helm-controller (source)	patch	v1.4.2 -> v1.4.5
registry1.dso.mil/ironbank/fluxcd/kustomize-controller (source)	patch	v1.7.1 -> v1.7.3
registry1.dso.mil/ironbank/fluxcd/notification-controller (source)	patch	v1.7.3 -> v1.7.5
registry1.dso.mil/ironbank/fluxcd/source-controller (source)	patch	v1.7.2 -> v1.7.4