Co-authored-by: Michael Kriese <michael.kriese@visualon.de>

Co-authored-by: Michael Kriese <michael.kriese@visualon.de>

Co-authored-by: Michael Kriese <michael.kriese@visualon.de>

Co-authored-by: Jamie Magee <jamie.magee@gmail.com>

Co-authored-by: Rhys Arkins <rhys@arkins.net>

Co-authored-by: Michael Kriese <michael.kriese@visualon.de>

Roll back the previous refactor.

Drops support for dockerMapDotfiles

BREAKING CHANGE: dockerMapDotfiles is no longer supported

Drops support for reading `.npmrc` from the bot's home directory.

BREAKING CHANGE: Renovate will no longer read from ~/.npmrc. Configure `npmrc` in config instead.

Removes support for the ignoreNpmrcFile config option.

BREAKING CHANGE: ignoreNpmrcFile is no longer supported. Use an empty string for config.npmrc instead.

Renames skipInstalls to artifactUpdateApproach and changes from boolean to enum.

BREAKING CHANGE: skipInstalls has been changed to artifactsUpdateApproach

Changes behavior so that patch updateType is not rewritten to minor by default.

Closes #2818

BREAKING CHANGE: patch updates are not considered updateType=minor by default.

Resets any language or manager` additionalBranchPrefix` values to empty string. Add the `compatibility:additionalBranchPrefix` prefix to restore previous behavior.

BREAKING CHANGE: Removal of default `additionalBranchPrefix` values will cause branch names to change for docker/helm/buildkite/cargo/homebrew.

Removes trustLevel and replaces it with 3 other options instead. No longer necessary to set anything additional is configuring `allowedPostUpgradeCommands`

BREAKING CHANGE: `trustLevel` is no longer supported and instead broken into `allowCustomCrateRegistries` , `allowScripts` , and `exposeAllEnv`.

Remove support for logLevel in config. Must be configured using LOG_LEVEL instead.

Closes #8291

BREAKING CHANGE: Configure LOG_LEVEL in env and not in config or CLI

Removes support for NPM_TOKEN.

BREAKING CHANGE: Do not use NPM_TOKEN in env to configure npm authentication. Configure hostRules instead.

Removes RENOVATE_LEGACY_GIT_AUTHOR_EMAIL support. 

Closes #9111

BREAKING CHANGE: RENOVATE_LEGACY_GIT_AUTHOR_EMAIL is no longer supported. Use `ignoredAuthors` in config instead.