chore(deps): update helm release cert-manager to v1.12.4 (#70)

This PR contains the following updates:

| Package | Update | Change |
|---|---|---|
| [cert-manager](https://github.com/cert-manager/cert-manager) | patch | `v1.12.3` -> `v1.12.4` |

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### Release Notes

<details>
<summary>cert-manager/cert-manager (cert-manager)</summary>

### [`v1.12.4`](https://github.com/cert-manager/cert-manager/releases/tag/v1.12.4)

[Compare Source](cert-manager/cert-manager@v1.12.3...v1.12.4)

v1.12.4 contains an important security fix that addresses [CVE-2023-29409](https://cve.report/CVE-2023-29409).

#### Changes since v1.12.3

-   Fixes an issue where cert-manager would incorrectly reject two IP addresses as being unequal when they should hav
    e compared equal. This would be most noticeable when using an IPv6 address which doesn't match how Go's `net.IP.Str
    ing()` function would have printed that address. ([#&#8203;6297](cert-manager/cert-manager#6297), [@&#8203;SgtCoDFish](https://github.com/SgtCoDFish))
-   Use Go 1.20.7 to fix a security issue in Go's `crypto/tls` library. ([#&#8203;6318](cert-manager/cert-manager#6318), [@&#8203;maelvls](https://github.com/maelvls))

</details>

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Reviewed-on: https://git.home/nrdufour/home-ops/pulls/70
Co-authored-by: Renovate <renovate@ptinem.io>
Co-committed-by: Renovate <renovate@ptinem.io>

kubernetes/main/apps/cert-manager/cert-manager/app/helm-release.yaml

@@ -8,7 +8,7 @@ spec:
   chart:
     spec:
       chart: cert-manager
-      version: "v1.12.3"
+      version: "v1.12.4"
       sourceRef:
         kind: HelmRepository
         name: jetstack