Upgrade Grails version on both Grails-based applications to 3.3.9
Upgraded both Grails-based applications from 3.3.8 to 3.3.9. I generated
blank Grails 3.3.8 and 3.3.9 apps and compared key files as necessary.
build.gradlegradle.propertiesgrails-app/assets/images/advancedgrails.svggrails-app/assets/images/apple-touch-icon-retina.pnggrails-app/assets/images/apple-touch-icon.pnggrails-app/assets/images/documentation.svggrails-app/assets/images/favicon.icograils-app/assets/images/slack.svggrails-app/assets/javascripts/application.jsgrails-app/assets/javascripts/bootstrap.bundle.jsgrails-app/assets/javascripts/bootstrap.bundle.js.mapgrails-app/assets/javascripts/bootstrap.bundle.min.jsgrails-app/assets/javascripts/bootstrap.bundle.min.js.mapgrails-app/assets/javascripts/bootstrap.jsgrails-app/assets/javascripts/bootstrap.js.mapgrails-app/assets/javascripts/bootstrap.min.jsgrails-app/assets/javascripts/bootstrap.min.js.mapgrails-app/assets/javascripts/jquery-2.2.0.min.jsgrails-app/assets/javascripts/jquery-3.3.1.min.jsgrails-app/assets/javascripts/jquery-3.3.1.min.js.mapgrails-app/assets/javascripts/popper.min.jsgrails-app/assets/stylesheets/bootstrap-grid.cssgrails-app/assets/stylesheets/bootstrap-reboot.cssgrails-app/assets/stylesheets/bootstrap.cssgrails-app/assets/stylesheets/bootstrap.css.mapgrails-app/assets/stylesheets/bootstrap.min.cssgrails-app/assets/stylesheets/bootstrap.min.css.mapgrails-app/assets/stylesheets/grails.cssgrails-app/assets/stylesheets/main.csssrc/integration-test/resources/GebConfig.groovy