chore(deps): update selenium/standalone-firefox docker tag to v20210422 [skip netlify] (#2999)

* chore(deps): update selenium/standalone-firefox docker tag to v20210422 [skip netlify]

* test(screenshotter): update screenshots

Co-authored-by: Renovate Bot <bot@renovateapp.com>
Co-authored-by: Young Min Kin <mail@ylem.kim>

.github/workflows/screenshotter.yml

@@ -16,7 +16,7 @@ jobs:
         - browser: chrome
           image: selenium/standalone-chrome:3.141.59-20210422
         - browser: firefox
-          image: selenium/standalone-firefox:3.141.59-20210311
+          image: selenium/standalone-firefox:3.141.59-20210422
         - browser: safari
           image: ylemkimon/selenium-proxy:latest
           browserstack:

dockers/screenshotter/screenshotter.sh

@@ -17,7 +17,7 @@ cleanup() {
 container=
 trap cleanup EXIT
 status=0
-for browserTag in "firefox:3.141.59-20210311" "chrome:3.141.59-20210422"; do
+for browserTag in "firefox:3.141.59-20210422" "chrome:3.141.59-20210422"; do
     browser=${browserTag%:*}
     image=selenium/standalone-${browserTag}
     echo "Starting container for ${image}"