2020-11-24, Version 12.20.0 'Erbium' (LTS)

Notable changes:

crypto:
  * update certdata to NSS 3.56 (Shelley Vohr) https://github.com/nodejs/node/pull/35546
deps:
  * update llhttp to 2.1.3 (Fedor Indutny) https://github.com/nodejs/node/pull/35435
  * (SEMVER-MINOR) upgrade to libuv 1.40.0 (Colin Ihrig) https://github.com/nodejs/node/pull/35333
doc:
  * add aduh95 to collaborators (Antoine du Hamel) https://github.com/nodejs/node/pull/35542
fs:
  * (SEMVER-MINOR) add .ref() and .unref() methods to watcher classes (rickyes) https://github.com/nodejs/node/pull/33134
http:
  * (SEMVER-MINOR) added scheduling option to http agent (delvedor) https://github.com/nodejs/node/pull/33278
module:
  * (SEMVER-MINOR) exports pattern support (Guy Bedford) https://github.com/nodejs/node/pull/34718
  * (SEMVER-MINOR) named exports for CJS via static analysis (Guy Bedford) https://github.com/nodejs/node/pull/35249
n-api:
  * (SEMVER-MINOR) add more property defaults (Gerhard Stoebich) https://github.com/nodejs/node/pull/35214
src:
  * (SEMVER-MINOR) move node_contextify to modern THROW_ERR_* (James M Snell) https://github.com/nodejs/node/pull/35470
  * (SEMVER-MINOR) move node_process to modern THROW_ERR* (James M Snell) https://github.com/nodejs/node/pull/35472
  * (SEMVER-MINOR) expose v8::Isolate setup callbacks (Shelley Vohr) https://github.com/nodejs/node/pull/35512

PR-URL: https://github.com/nodejs/node/pull/35950