mgr/dashboard: bump @angular/language-service from 12.2.16 to 20.3.9 in /src/pybind/mgr/dashboard/frontend#417

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dependabot-npm_and_yarn-src-pybind-mgr-dashboard-frontend-angular-language-service-20.3.9adk3798/ceph:dependabot-npm_and_yarn-src-pybind-mgr-dashboard-frontend-angular-language-service-20.3.9Copy head branch name to clipboard