chore(deps): pin Angular to 22.0.5 and gate audit at high

Angular 22.1.x emits `var(--%NS%name)` for every CSS custom property in a
component `styles:` block. No `@angular/core` release substitutes the
placeholder, so all `--rhc-*` tokens resolve to nothing and the UI breaks.
`npm run ci` does not catch it; only the Storybook axe job does.

Pin every `@angular*` entry to the exact version 22.0.5, so a plain
`npm install` cannot pull 22.1.x back in.

Holding at 22.0.5 leaves three moderate advisories open, which made the audit
step fail: GHSA-p297-fm68-3q8c and GHSA-hh8m-fm6v-7cvg. Neither is reachable.
The app calls no `withRequestsMadeViaParent` and no `provideClientHydration`,
and binds no untrusted value into a directive host binding. The audit gate
therefore runs at `--audit-level=high`. A high advisory still fails the build.

Restore the default audit level together with the upgrade, after an Angular
release substitutes the placeholder.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

scripts/ci-local.sh

@@ -27,7 +27,7 @@ step "check:tokens";              npm run check:tokens
 step "check:seam";                npm run check:seam
 step "test (vitest + coverage)";  npm run test:coverage
 step "build --localize (nl+en)";  npx ng build ssp --localize; npx ng build behandelportal --localize
-step "npm audit (shipped deps)";  npm audit --omit=dev
+step "npm audit (shipped deps)";  npm audit --omit=dev --audit-level=high
 step "backend format + tests";    ( cd backend && dotnet format BigRegister.slnx --verify-no-changes && dotnet test BigRegister.slnx --filter "Category!=Integration" )
 step "backend dependency audit";  ./scripts/dotnet-audit.sh
 step "showcase snippets drift";   npm run gen:snippets; git diff --exit-code apps/ssp/src/app/showcase/snippets.generated.ts