fix: replace deprecated url.parse() with new URL()

[alumni]

Checklist

• I have ensured my pull request is not behind the main or master branch of the original repository.
• I have rebased all commits where necessary so that reviewing this pull request can be done without having to merge it first.
• I have written a commit message that passes commitlint linting.
• I have ensured that my code changes pass linting tests.
• I have ensured that my code changes pass unit tests.
• I have described my pull request and the reasons for code changes along with context if necessary.

Replaces the other occurrences of url.parse() with new URL(). Continuation of PR #1802.

[titanism]

Can you fix merge conflict @alumni ?

[titanism]

released in v9.0.2

https://github.com/ladjs/superagent/releases/tag/v9.0.2

[foresterre]

This is possibly a breaking change. Previously, a value like "0.0.0.0" was accepted, while it now errors with "0.0.0.0 is not a valid URL"