refactor: replace combineLatest deprecated usages

[rafaelss95]

PR Checklist

Please check if your PR fulfills the following requirements:

• The commit message follows our guidelines: https://github.com/datorama/akita/blob/master/CONTRIBUTING.md#commit
• Tests for the changes have been added (for bug fixes / features)
• Docs have been added / updated (for bug fixes / features)

PR Type

What kind of change does this PR introduce?

• Bugfix
• Feature
• Code style update (formatting, local variables)
• Refactoring (no functional changes, no api changes)
• Build related changes
• CI related changes
• Documentation content changes
• Other... Please describe:

What is the current behavior?

When I was looking at the docs I noticed that there are some deprecated usages of combineLatest like this:

Issue Number: N/A

What is the new behavior?

When I was replacing it in .mdx files, I noticed that there were some in .ts file too, so I went ahead and changed all usages from combineLatest(...) to combineLatest([...]).

Does this PR introduce a breaking change?

• Yes
• No

Other information

• There are some failing tests in libs/akita/src/__tests__/pagination.spec.ts and libs/akita/src/__tests__/persistState.spec.ts;
• It seems like eslint and Prettier aren't happy with the current codebase. To make this commit, I had to skip it by using --no-verify, otherwise many changes would be applied. It would be good to create a separate PR to run it through the codebase and standarize this, wouldn't it?

I can help with both if it's good for you.