chore(deps): update dependency fluxcd/flux2 to v2.1.2 (#143)

This PR contains the following updates:

| Package | Type | Update | Change |
|---|---|---|---|
| [fluxcd/flux2](https://github.com/fluxcd/flux2) | Kustomization | patch | `v2.1.1` -> `v2.1.2` |

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> ⚠ **Warning**
>
> Some dependencies could not be looked up. Check the warning logs for more information.

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### Release Notes

<details>
<summary>fluxcd/flux2 (fluxcd/flux2)</summary>

### [`v2.1.2`](https://github.com/fluxcd/flux2/releases/tag/v2.1.2)

[Compare Source](fluxcd/flux2@v2.1.1...v2.1.2)

#### Highlights

Flux `v2.1.2` is a patch release which comes with various fixes. Users are encouraged to upgrade for the best experience.

##### Fixes

-   Ensures faster recovery of `Kustomization` and `HelmRelease` resources when the source-controller has restarted and is working on restoring the storage.
-   Prevent source-controller from failing to reconcile `OCIRepositories` when artifacts contain symlinks.
-   Addresses issue with helm-controller miss-labeling Custom Resource Definitions.
-   Detect immutable field errors in Google Cloud resources managed by Flux `Kustomizations`.
-   Better error reporting for `flux bootstrap` when the owner doesn't match the identity associated with the given token.
-   Allow `flux pull artifact` to fetch OCI artifacts produced by other tools.

#### Components changelog

-   source-controller [v1.1.2](https://github.com/fluxcd/source-controller/blob/v1.1.2/CHANGELOG.md)
-   kustomize-controller [v1.1.1](https://github.com/fluxcd/kustomize-controller/blob/v1.1.1/CHANGELOG.md)
-   helm-controller [v0.36.2](https://github.com/fluxcd/helm-controller/blob/v0.36.2/CHANGELOG.md)

#### CLI Changelog

-   PR [#&#8203;4324](fluxcd/flux2#4324) - [@&#8203;somtochiama](https://github.com/somtochiama) - bootstrap: Fix error msg when the Git token doesn't match the repo owner
-   PR [#&#8203;4323](fluxcd/flux2#4323) - [@&#8203;stefanprodan](https://github.com/stefanprodan) - e2e: Update Go dependencies
-   PR [#&#8203;4313](fluxcd/flux2#4313) - [@&#8203;fluxcdbot](https://github.com/fluxcdbot) - Update toolkit components
-   PR [#&#8203;4296](fluxcd/flux2#4296) - [@&#8203;Skarlso](https://github.com/Skarlso) - fix: only wait for changeset if the result is not empty
-   PR [#&#8203;4285](fluxcd/flux2#4285) - [@&#8203;matheuscscp](https://github.com/matheuscscp) - Add badge for SLSA Level 3
-   PR [#&#8203;4284](fluxcd/flux2#4284) - [@&#8203;errordeveloper](https://github.com/errordeveloper) - Make `flux pull` work for OCI artifacts produced by other tools

</details>

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Reviewed-on: https://git.home/nrdufour/home-ops/pulls/143
Co-authored-by: Renovate <renovate@ptinem.io>
Co-committed-by: Renovate <renovate@ptinem.io>

kubernetes/main/bootstrap/flux/kustomization.yaml

@@ -3,5 +3,5 @@
 apiVersion: kustomize.config.k8s.io/v1beta1
 kind: Kustomization
 resources:
-  - github.com/fluxcd/flux2/manifests/install?ref=v2.1.1
+  - github.com/fluxcd/flux2/manifests/install?ref=v2.1.2