Auto merge of rust-lang#305 - JohnTitor:actions-v3, r=JohnTitor

Upgrade actions/checkout to v3

Author: bors

.github/workflows/ci.yml

@@ -36,7 +36,7 @@ jobs:
     runs-on: ${{ matrix.builder }}
 
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v3
       - name: Setup latest nightly toolchain
         run: bash ci/setup-toolchain.sh
         if: github.event_name == 'schedule'

.github/workflows/style.yml

@@ -16,7 +16,7 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v3
 
       - name: Shellcheck
         run: |