Remove superagent

[josephjclark]

We should migrate all adaptors away from superagent

Some old versions of superagent have vulnerabilities (through qs), although I believe these are all dependencies. So it's not really dangerous, just untidy.

Affected packages should either:

1. migrate to the new common http utils (preferable)
2. migrate to use undici as a direct replacement

The affected adaptors appear to be:

@openfn/language-beyonic@0.2.1 
@openfn/language-cartodb@0.2.1 
@openfn/language-commcare@1.6.12  (done!)
@openfn/language-magpi@1.1.2 
@openfn/language-mailchimp@0.7.3 
@openfn/language-openhim@0.2.1 
@openfn/language-telerivet@0.2.1 
@openfn/language-zoho@0.3.1