argocd: update viaductoss/ksops Docker tag to v4.2.0

[renovate[bot]]

This PR contains the following updates:

Package	Type	Update	Change
viaductoss/ksops	Kustomization	minor	v4.1.1 -> v4.2.0

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Release Notes

viaduct-ai/kustomize-sops

### [`v4.2.0`](https://togithub.com/viaduct-ai/kustomize-sops/releases/tag/v4.2.0) [Compare Source](https://togithub.com/viaduct-ai/kustomize-sops/compare/v4.1.3...v4.2.0) #### Changelog - [`a784f38`](https://togithub.com/viaduct-ai/kustomize-sops/commit/a784f38) Update README / Revert Legacy README Changes ([#​186](https://togithub.com/viaduct-ai/kustomize-sops/issues/186)) - [`cec9bdc`](https://togithub.com/viaduct-ai/kustomize-sops/commit/cec9bdc) feat: support remote refs in Docker image ([#​182](https://togithub.com/viaduct-ai/kustomize-sops/issues/182)) - [`93f4220`](https://togithub.com/viaduct-ai/kustomize-sops/commit/93f4220) fix: preserve old Docker image paths for backwards compatability ([#​185](https://togithub.com/viaduct-ai/kustomize-sops/issues/185)) - [`8b47ef9`](https://togithub.com/viaduct-ai/kustomize-sops/commit/8b47ef9) v4.2.0 ### [`v4.1.3`](https://togithub.com/viaduct-ai/kustomize-sops/releases/tag/v4.1.3) [Compare Source](https://togithub.com/viaduct-ai/kustomize-sops/compare/v4.1.2...v4.1.3) #### Changelog - [`29f2032`](https://togithub.com/viaduct-ai/kustomize-sops/commit/29f2032) fix: move docker image source label to final image ([#​181](https://togithub.com/viaduct-ai/kustomize-sops/issues/181)) - [`b2f28bd`](https://togithub.com/viaduct-ai/kustomize-sops/commit/b2f28bd) v4.1.3 ### [`v4.1.2`](https://togithub.com/viaduct-ai/kustomize-sops/releases/tag/v4.1.2) [Compare Source](https://togithub.com/viaduct-ai/kustomize-sops/compare/v4.1.1...v4.1.2) #### Changelog - [`51fdcbb`](https://togithub.com/viaduct-ai/kustomize-sops/commit/51fdcbb) fix: reduce size of docker image by leveraging a multi-stage build ([#​180](https://togithub.com/viaduct-ai/kustomize-sops/issues/180)) - [`70b222b`](https://togithub.com/viaduct-ai/kustomize-sops/commit/70b222b) v4.1.2

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