CI: install gem webdrivers

#5

.gitea/workflows/ci.yml

@@ -69,6 +69,9 @@ jobs:
           ruby-version: .ruby-version
           bundler-cache: true
 
+      - name: Install webdrivers
+        run: gem install webdrivers
+
       - name: Setup test database
         env:
           RAILS_ENV: test

spec/system/export_spec.rb

@@ -19,7 +19,7 @@ RSpec.describe "Exports", type: :system do
     it "should be possible to export the list of contestants", :with_downloads do
       login(user)
 
-      sleep 0.5
+      sleep 0.6
 
       visit contest_contestants_path(contest)