Vault can not re-render template when configmap updated in K8s

This is a reference ticket to https://github.com/hashicorp/vault/issues/8620

### Consul Template version

Vault 1.2 is being used

### Configuration

```hcl
vault-agent-config.hcl: |2

pid_file = "/home/vault/pidfile"
log_level = "Debug"

auto_auth {
method "kubernetes" {
mount_path = "auth/kubernetes/shared/qa/"
config = {
role = "shared-qa-qa-paas-sre-default"
}
}

sink "file" {
config = {
path = "/home/vault/.vault-token"
}
}
}
template {
destination = "/etc/secrets/settings.json"
source = "/etc/template-files/settings.json"
}

```

### Expected Behavior
updated configmap template can be re-rendered by vault

### Debug output


however, highlighted line is not removed.


Start with the referenced Vault issue and reproduce the behavior using the shown vault-agent-config.hcl template configuration, including the settings.json source and destination. Compare the rendered output before and after the Kubernetes ConfigMap update; done means the updated template is re-rendered and the highlighted stale line is removed.

Written by the indexing model from the issue text.