chore: completely remove support for form-data package (node-fetch#1486)

BREAKING CHANGE: the `form-data` package is no longer supported

It now needs a spec compatible FormData to be sent

chore: remove EventTarget from the isAbortSignal (node-fetch#1490)

BREAKING CHANGE: when checking if something is a AbortSignal we no longer check if name match EventTarget

chore: completely remove `.buffer()` (node-fetch#1485)

BREAKING CHANGE: `body.buffer()` has been removed

drop support for Node 12

drop support for Node 12

BREAKING CHANGE: drop support for Node 12

feat: export Blob, File and FormData + utilities (node-fetch#1463)

* feat: export FormData, Blob and Files

* use import from index instead

* sort a-z

* explicit export

* bump version

* xo lint

3.1.1 release (node-fetch#1451)

backport of node-fetch#1449 (node-fetch#1453)

* backport of node-fetch#1449

* bump patch version

release minor change (3.1.0) (node-fetch#1364)

fix(URL): prefer built in URL version when available and fallback to …

…whatwg (node-fetch#1352)

* fix(URL): prefer built in URL version when available and fallback to whatwg

* bump minor

fix: import whatwg-url in a way compatible with ESM Node (node-fetch#…

…1303)

* fix: import whatwg-url in a way compatible with ESM Node

* release: 2.6.5