Description

Fix url_launcher pod lib lint warnings:

 -> url_launcher_macos (0.0.1)
    - WARN  | license: Missing license type.
    - WARN  | [OSX] keys: Missing primary key for `source` attribute. The acceptable ones are: `git, hg, http, svn`.
...
[!] url_launcher_macos did not pass validation, due to 2 warnings (but you can use `--allow-warnings` to ignore them).

 -> url_launcher (0.0.1)
    - WARN  | license: Missing license type.
    - WARN  | [iOS] keys: Missing primary key for `source` attribute. The acceptable ones are: `git, hg, http, svn`.
...
[!] url_launcher did not pass validation, due to 2 warnings (but you can use `--allow-warnings` to ignore them).

Related Issues

flutter/flutter#55245
Dependency to merge https://github.com/flutter/plugin_tools/pull/97

Checklist

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• My PR includes unit or integration tests for all changed/updated/fixed behaviors (See [Contributor Guide]).
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Breaking Change

• Yes, this is a breaking change (please indicate a breaking change in CHANGELOG.md and increment major revision).
• No, this is not a breaking change.