Faster check times on CI (#858)

Co-authored-by: Marcin <133694481+m7pr@users.noreply.github.com>

Author: llrs-roche

.github/workflows/check.yaml

@@ -43,6 +43,7 @@ jobs:
       unit-test-report-brand: >-
         https://raw.githubusercontent.com/insightsengineering/hex-stickers/main/thumbs/teal.png
       deps-installation-method: setup-r-dependencies
+      selected-shinytests: true
   r-cmd-non-cran:
     name: R CMD Check (non-CRAN) 🧬
     uses: insightsengineering/r.pkg.template/.github/workflows/build-check-install.yaml@main
@@ -66,6 +67,7 @@ jobs:
         checking for unstated dependencies in vignettes .* NOTE
         checking top-level files .* NOTE
       deps-installation-method: setup-r-dependencies
+      selected-shinytests: true
   coverage:
     name: Coverage 📔
     uses: insightsengineering/r.pkg.template/.github/workflows/test-coverage.yaml@main