chore(deps): update helm release vault to v0.21.0 (#219)

This PR contains the following updates:

| Package | Update | Change |
|---|---|---|
| [vault](https://www.vaultproject.io) ([source](https://github.com/hashicorp/vault-helm)) | minor | `0.20.1` -> `0.21.0` |

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### Release Notes

<details>
<summary>hashicorp/vault-helm</summary>

### [`v0.21.0`](https://github.com/hashicorp/vault-helm/blob/HEAD/CHANGELOG.md#&#8203;0210-August-10th-2022)

[Compare Source](hashicorp/vault-helm@v0.20.1...v0.21.0)

CHANGES:

-   `vault-k8s` updated to 0.17.0. [GH-771](hashicorp/vault-helm#771)
-   `vault-csi-provider` updated to 1.2.0 [GH-771](hashicorp/vault-helm#771)
-   `vault` updated to 1.11.2 [GH-771](hashicorp/vault-helm#771)
-   Start testing against Kubernetes 1.24. [GH-744](hashicorp/vault-helm#744)
-   Deprecated `injector.externalVaultAddr`. Added `global.externalVaultAddr`, which applies to both the Injector and the CSI Provider. [GH-745](hashicorp/vault-helm#745)
-   CSI Provider pods now set the `VAULT_ADDR` environment variable to either the internal Vault service or the configured external address. [GH-745](hashicorp/vault-helm#745)

Features:

-   server: Add `server.statefulSet.securityContext` to override pod and container `securityContext`. [GH-767](hashicorp/vault-helm#767)
-   csi: Add `csi.daemonSet.securityContext` to override pod and container `securityContext`. [GH-767](hashicorp/vault-helm#767)
-   injector: Add `injector.securityContext` to override pod and container `securityContext`. [GH-750](hashicorp/vault-helm#750) and [GH-767](hashicorp/vault-helm#767)
-   Add `server.service.activeNodePort` and `server.service.standbyNodePort` to specify the `nodePort` for active and standby services. [GH-610](hashicorp/vault-helm#610)
-   Support for setting annotations on the injector's serviceAccount [GH-753](hashicorp/vault-helm#753)

</details>

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Reviewed-on: https://git.devmem.ru/projects/infra/pulls/219
Co-authored-by: Renovate Bot <renovate@devmem.ru>
Co-committed-by: Renovate Bot <renovate@devmem.ru>

cluster/platform/vault/Chart.yaml

@@ -3,5 +3,5 @@ name: vault
 version: 0.0.0
 dependencies:
   - name: vault
-    version: 0.20.1
+    version: 0.21.0
     repository: https://helm.releases.hashicorp.com