chore(deps): update ghcr.io/controlplaneio-fluxcd/charts/flux-instance docker tag to v0.38.1 (#968)

This PR contains the following updates:

| Package | Update | Change |
|---|---|---|
|
[ghcr.io/controlplaneio-fluxcd/charts/flux-instance](https://redirect.github.com/controlplaneio-fluxcd)
([source](https://redirect.github.com/controlplaneio-fluxcd/flux-operator))
| minor | `0.37.1` -> `0.38.1` |

---

### Release Notes

<details>
<summary>controlplaneio-fluxcd/flux-operator
(ghcr.io/controlplaneio-fluxcd/charts/flux-instance)</summary>

###
[`v0.38.1`](https://redirect.github.com/controlplaneio-fluxcd/flux-operator/compare/v0.37.1...v0.38.1)

[Compare
Source](https://redirect.github.com/controlplaneio-fluxcd/flux-operator/compare/v0.37.1...v0.38.1)

</details>

---

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cluster/apps/flux-system/flux-instance/app/ocirepository.yaml

@@ -8,7 +8,7 @@ spec:
     mediaType: application/vnd.cncf.helm.chart.content.v1.tar+gzip
     operation: copy
   ref:
-    tag: 0.37.1
+    tag: 0.38.1
   url: oci://ghcr.io/controlplaneio-fluxcd/charts/flux-instance
   verify:
     provider: cosign

provision/servonet/helmfile.d/00-bootstrap.yaml

@@ -50,7 +50,7 @@ releases:
   - name: flux-instance
     namespace: flux-system
     chart: oci://ghcr.io/controlplaneio-fluxcd/charts/flux-instance
-    version: 0.37.1
+    version: 0.38.1
     wait: false
     values:
       - templates/values.yaml.gotmpl