Fix ArgumentError when using custom scrubber with PlugCapture

[paulstatezny]

The docs for Sentry.PlugCapture reference the custom :scrubber option for use Sentry.PlugCapture:

a term of type {module, function, args} that will be invoked to scrub sensitive data from Plug.Conn structs.

However, when you provide {module, function, args} as instructed:

use Sentry.PlugCapture, scrubber: {MyModule, :scrub_conn, []}

You get this compilation error:

== Compilation error in file my_endpoint.ex ==
** (ArgumentError) expected :scrubber to be a {module, function, args} tuple, got: {:{}, [line: 4], [MyModule, :scrub_conn, []]}

This PR removes the Macro.escape that was causing this.

[paulstatezny]

You can reproduce the compilation error by running the test against the code in master.

[whatyouhide]

Ah, great catch, thank you @paulstatezny 💟

[paulstatezny]

@whatyouhide Thank you!

Question: I intended to use this feature to redact certain segments of certain URLs. But it seems the URL passed to Sentry uses the original conn, not the scrubbed one.

Do you have a recommendation for redacting sensitive URL segments? I know it's an odd case. Would you be open to a PR that adds a URL scrubber similar to the header / body / param scrubbers?

[whatyouhide]

Yes absolutely!