Update dependency sass-loader to v8 (master)

[renovate]

This PR contains the following updates:

Package	Type	Update	Change
sass-loader	dependencies	major	7.3.1 -> 8.0.0

---

Release Notes

webpack-contrib/sass-loader

v8.0.0

Compare Source

⚠ BREAKING CHANGES

• minimum required webpack version is 4.36.0
• minimum required node.js version is 8.9.0
• move all sass (includePaths, importer, functions) options to the sassOptions option. The functions option can't be used as Function, you should use sassOption as Function to achieve this.
• the data option was renamed to the prependData option
• default value of the sourceMap option depends on the devtool value (eval/false values don't enable source map generation)

Features

• automatically use the fibers package if it is possible (#​744) (96184e1)
• source map generation depends on the devtool option (#​743) (fcea88e)
• validate loader options (#​737) (7b543fc)
• reworked error handling from node-sass/sass
• improve resolution for @import (including support _index and index files in a directory)

Bug Fixes

• compatibility with pnp

7.3.1 (2019-08-20)

Bug Fixes

• minimum node version in package.json (#​733) (1175920)

---

Renovate configuration

📅 Schedule: At any time (no schedule defined).

🚦 Automerge: Disabled by config. Please merge this manually once you are satisfied.

♻️ Rebasing: Whenever PR becomes conflicted, or if you modify the PR title to begin with "rebase!".

🔕 Ignore: Close this PR and you won't be reminded about this update again.

---

• If you want to rebase/retry this PR, check this box

---

This PR has been generated by Renovate Bot. View repository job log here.

[vercel]

This pull request is automatically deployed with Now.
To access deployments, click Details below or on the icon next to each push.

[renovate]

PR has been edited

👷 This PR has received other commits, so Renovate will stop updating it to avoid conflicts or other problems. If you wish to abandon your changes and have Renovate start over you may click the "rebase" checkbox in the PR body/description.

If you think this comment is in error and the branch is not modified, try deleting this comment. If it comes back again the next time Renovate runs, please submit an issue or seek config help.

[lautr]

blocked by vuejs/vue-cli#4513

[renovate]

Autoclosing Skipped

This PR has been flagged for autoclosing, however it is being skipped due to the branch being already modified. Please close/delete it manually or report a bug if you think this is in error.