feat(core)!: migrate to angular 20

[NachoVazquez]

PR Checklist

Please check if your PR fulfills the following requirements:

• The commit message follows our guidelines: 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
[x] 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?

We support up to Angular 19

Fixes: #218

What is the new behavior?

Add support for Angular 20

Does this PR introduce a breaking change?

[x] Yes
[ ] No

The new version is only compatible with Angular 20

[nx-cloud]

View your CI Pipeline Execution ↗ for commit 7a513d8.

Command	Status	Duration	Result
nx run-many --target=test --configuration=ci --...	✅ Succeeded	<1s	View ↗
nx run-many --target=lint --configuration=repor...	✅ Succeeded	<1s	View ↗

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☁️ Nx Cloud last updated this comment at 2025-06-11 18:51:46 UTC

[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud