chore(deps-dev): bump @angular/language-service in /ui

---
updated-dependencies:
- dependency-name: "@angular/language-service"
  dependency-version: 20.0.6
  dependency-type: direct:development
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

ui/package.json

@@ -41,7 +41,7 @@
     "@angular-eslint/template-parser": "19.2.0",
     "@angular/cli": "~19.2.0",
     "@angular/compiler-cli": "19.2.14",
-    "@angular/language-service": "19.2.14",
+    "@angular/language-service": "20.0.6",
     "@nx/cypress": "21.1.2",
     "@nx/jest": "21.1.2",
     "@nx/storybook": "21.1.2",