Fix connection to Tiller error while uninstalling

What does this MR do?

Make sure the configmap (with refreshed cert) is loaded for the uninstall pod.

Both the install-<app> and uninstall-<app> pods loads the values-content-configuration-<app> configmap into the pod (see #volume_specification). This configmap contains the cert necessary to connect to Tiller. The cert though is only valid for 30 minutes.

So this fixes the bug where the configmap (when uninstalling) should be updated as well.

Q: How does the configmap have updated certs?

A: #config_map_resource calls #files which then calls #helm_cert. #helm_cert will issue a new cert valid for the next 30 minutes.

Closes #62713 (closed)

Does this MR meet the acceptance criteria?

Conformity

• Changelog entry
• [-] Documentation created/updated or follow-up review issue created
• Code review guidelines
• [-] Merge request performance guidelines
• Style guides
• [-] Database guides
• [-] Separation of EE specific content

Performance and testing

• Review and add/update tests for this feature/bug. Consider all test levels. See the Test Planning Process.
• [-] Tested in all supported browsers

Security

If this MR contains changes to processing or storing of credentials or tokens, authorization and authentication methods and other items described in the security review guidelines:

• Label as security and @ mention @gitlab-com/gl-security/appsec
• The MR includes necessary changes to maintain consistency between UI, API, email, or other methods
• Security reports checked/validated by a reviewer from the AppSec team