CI: Split dependency setup

Split into common + build/docs/test (common always installs, build/docs/test are installed as requested with `build-*-deps` input flag).

.github/workflows/test-sanitizers.yml

@@ -46,7 +46,9 @@ jobs:
         uses: ./.github/actions/setup-build-env
         with:
           runs-on: ${{ matrix.os }}
-          setup-iverilog: true
+          get-build-deps: true
+          get-test-deps: true
+          get-iverilog: true
 
       - name: Build
         shell: bash