fix: correct payload type by omitting context keys (probot#1389)

feat: use `octokit-auth-probot` (probot#1392)

fix: use `webhooks.onError()` instead of deprecated `webhooks.on("err…

…or", ...)` (probot#1390)

fix(typescript): TypeScript issues TS2305,TS2707,TS7006

fixes probot#1387

fix(types): set correct type for `context` passed to event handler (p…

…robot#1378)

follow up to https://github.com/probot/probot/pull/1374/files\#r501871740

 fix(typescript): adapt for latest `@octokit/webhooks` (probot#1374)

Co-authored-by: Ankeet Maini <[email protected]>

fix: do not overwrite `options.throttle` passed to `{Octokit: ProbotO…

…ctokit.defaults(options)} (probot#1373)

feat: deprecate `new Application({ throttleOptions })` (probot#1365)

fix: use `@probot/octokit-plugin-config` for `context.config` (probot…

…#1362)

* build(deps): `@probot/octokit-plugin-config`

* test(context.config): adapt http mocks for `@probot/octokit-plugin-config`

* fix: use `@probot/octokit-plugin-config`

* test(context.config): remove tests that test internal behavior of `@probot/octokit-plugin-config`

feat: add restart message (probot#1353)