Update DuckDuckGo to 5.188.0

Please make sure your repo is public and your branch is not protected. See https://docs.gitlab.com/ee/user/project/protected_branches.html. We enable fast-forward merges by default. If your branch is protected, we can't rebase it before merge it.

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Required

• The app complies with the inclusion criteria
• All related fdroiddata and RFP issues have been referenced in this merge request
• Builds with fdroid build

Strongly Recommended

• The upstream app source code repo contains the app metadata (summary/description/images/changelog/etc) in a Fastlane or Triple-T folder structure
• Releases are tagged

Suggested

• External repos are added as git submodules instead of srclibs
• Multiple apks for native code

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Closes fdroiddata#