chore(deps): update helm release cert-manager to v1.20.1 (#175)

This PR contains the following updates:

| Package | Type | Update | Change | OpenSSF |
|---|---|---|---|---|
| [cert-manager](https://cert-manager.io)
([source](https://redirect.github.com/cert-manager/cert-manager)) |
helm_release | patch | `v1.20.0` → `v1.20.1` | [![OpenSSF
Scorecard](https://api.securityscorecards.dev/projects/github.com/cert-manager/cert-manager/badge)](https://securityscorecards.dev/viewer/?uri=github.com/cert-manager/cert-manager)
|

---

### Release Notes

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

###
[`v1.20.1`](https://redirect.github.com/cert-manager/cert-manager/compare/v1.20.0...v1.20.1)

[Compare
Source](https://redirect.github.com/cert-manager/cert-manager/compare/v1.20.0...v1.20.1)

</details>

---

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01_infrastructure/cert-manager.tf

@@ -71,7 +71,7 @@ resource "helm_release" "cert_manager" {
   # - Enhanced DNS provider integrations
   # - Improved certificate renewal reliability
   # - Security fixes and performance optimizations
-  version = "v1.20.0"
+  version = "v1.20.1"
 
   # Deploy in cluster dependencies namespace
   # Co-locates with other infrastructure services