fix(gitlabci): Support named services

[caiofbpa]

Changes:

This PR makes Renovate recognize named services in .gitlab-ci.yml.

Context:

Resolve #9731

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[viceice]

@zharinov What do you think is better for parsing yaml? Creating a custom moo lexer or use a yaml-js and replace non supported tokens before?

I like to get rid of the complex regex, which are pretty hard to read and understand.

[zharinov]

My plan is to extract configurable lexer fabric that is meant to support generic lexical features of languages, while being liberal with unknown fragments. And I'm thinking of indent-based languages too.

[caiofbpa]

@viceice I've accepted your first suggestion to simplify the test, thanks!

I'm not sure what could be done with the regex in this PR, using what @zharinov mentioned sounds like a refactor to be done later.

What do you think? Could this PR be merged as is?

[zharinov]

Yes I think, current regular expressions are my requirements for future lexer refactoring

[caiofbpa]

@viceice you're right, I left those *s by accident actually. Regex is so hard to read that it slipped through. I just double checked the cases you mentioned and a couple more with a regex REPL, should be fine now.

[renovate-release]

🎉 This PR is included in version 25.4.2 🎉

The release is available on:

• GitHub release
• 25.4.2

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