Update docs that include internal 1Password reference

Problem to solve

GItLab IT will no longer allow access to the corporate 1Password vault. There are several places in our documentation that refer to that vault, including:

• https://docs.gitlab.com/ee/development/testing_guide/review_apps.html#log-into-my-review-app
• https://docs.gitlab.com/ee/development/fe_guide/#browser-support
• https://docs.gitlab.com/ee/development/i18n/merging_translations.html#recreate-the-gitlab-integration-in-crowdin
• https://docs.gitlab.com/ee/development/testing_guide/frontend_testing.html#browserstack

Further details

Update as needed, coordinate with and get approval from applicable groups

Proposal

Who can address the issue

Other links/references