Bump actions/checkout from v2.3.0 to v2.3.1 (#103)

Bumps [actions/checkout](https://github.com/actions/checkout) from v2.3.0 to v2.3.1.
- [Release notes](https://github.com/actions/checkout/releases)
- [Changelog](https://github.com/actions/checkout/blob/master/CHANGELOG.md)
- [Commits](actions/checkout@v2.3.0...28c7f3d)

Signed-off-by: dependabot[bot] <[email protected]>

Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

.github/workflows/ci.yml

@@ -18,7 +18,7 @@ jobs:
     steps:
       -
         name: Checkout
-        uses: actions/[email protected].0
+        uses: actions/[email protected].1
       -
         name: Labeler (test)
         uses: ./

.github/workflows/labels.yml

@@ -14,7 +14,7 @@ jobs:
     steps:
       -
         name: Checkout
-        uses: actions/[email protected].0
+        uses: actions/[email protected].1
       -
         name: Run Labeler
         if: success()

.github/workflows/pre-checkin.yml

@@ -14,7 +14,7 @@ jobs:
     steps:
       -
         name: Checkout
-        uses: actions/[email protected].0
+        uses: actions/[email protected].1
       -
         name: Install
         run: yarn install