Renovate regex stops tracking module refs with multi-word tag prefixes

## Problem
`renovate.json` parses Terraform module `?ref=` tags with:
~~~
versioning: regex:^(?:[a-z]+-)?rev(?\d+)$
~~~

`(?:[a-z]+-)?` allows **at most one** hyphenated prefix segment. Any charm repo
whose tags use two or more falls out of the pattern (ex: gopkg-charmed-rev1 or ingress-configurator-rev103), and Renovate stops offering
updates for that dependency

## Proposed fix

~~~diff
- "versioning": "regex:^(?:[a-z]+-)?rev(?\\d+)$"
+ "versioning": "regex:^(?:[a-z0-9]+-)*rev(?\\d+)$"
~~~

`*` instead of `?` allows any number of prefix segments; `[a-z0-9]` covers names with numbers. I am not sure if there is any rule/compliance that prevents this or not.

Open renovate.json and inspect the versioning regex used for Terraform module ?ref= tags. Check it against examples such as gopkg-charmed-rev1 and ingress-configurator-rev103, including prefixes with numbers. Done means Renovate recognizes these multi-segment tags and can offer dependency updates.

Written by the indexing model from the issue text.