deps: bump cert-manager Helm chart to v1.16.2

[github-actions]

deps: bump cert-manager version

Update cert-manager/manifest.yaml

change detected: * key "$.version" updated from "v1.16.1" to "v1.16.2", in file "cert-manager/manifest.yaml"

v1.16.2

Release published on the 2024-11-20 19:21:40 +0000 UTC at the url https://github.com/cert-manager/cert-manager/releases/tag/v1.16.2

cert-manager is the easiest way to automatically manage certificates in Kubernetes and OpenShift clusters.

This patch release of cert-manager 1.16 makes [several changes](https://github.com/cert-manager/cert-manager/pull/7401) to how PEM input is validated, adding maximum sizes appropriate to the type of PEM data which is being parsed.

This is to prevent an unacceptable slow-down in parsing specially crafted PEM data. The issue was found by Google's OSS-Fuzz project.

The issue is low severity; to exploit the PEM issue would require privileged access which would likely allow Denial-of-Service through other methods.

Note also that since most PEM data parsed by cert-manager comes from `ConfigMap` or `Secret` resources which have a max size limit of approximately 1MB, it's difficult to force cert-manager to parse large amounts of PEM data.

Further information is available in https://github.com/cert-manager/cert-manager/security/advisories/GHSA-r4pg-vg54-wxx4

In addition, the version of Go used to build cert-manager 1.16 was updated along with the base images.

## Changes by Kind

### Bug or Regression

- Set a maximum size for PEM inputs which cert-manager will accept to remove possibility of taking a long time to process an input (#7401, @SgtCoDFish)

### Other (Cleanup or Flake)

- Bump go to 1.23.3 and bump base images to latest available (#7431, @SgtCoDFish)

Update cert-manager/install.sh

1 file(s) updated with "/download/v1.16.2/": * cert-manager/install.sh

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