gcp_secret_manager: support delete all the versions but `latest`

##### SUMMARY

Support `exclude_latest` when using `gcp_secret_manager` with `version: all-but-latest`

```yaml
- name: Delete all versions of a secret
google.cloud.gcp_secret_manager:
name: secret_key
version: all-but-latest
state: absent
```

##### ISSUE TYPE
- Feature Idea

##### COMPONENT NAME
`google.cloud.gcp_secret_manager`

##### ADDITIONAL INFORMATION

https://github.com/ansible-collections/google.cloud/issues/543 added support for `gcp_secret_manager`.

This should help remove old versions without the need to pay for them:
- https://cloud.google.com/secret-manager/pricing

```yaml

```

Start at the google.cloud.gcp_secret_manager module and trace the existing handling for version: all and version: latest. Implement the requested all-but-latest deletion behavior for state: absent, preserving the latest version, and verify that the example playbook produces the intended result.

Written by the indexing model from the issue text.