⬆️ Bump actions/checkout from 2 to 3 (#844)

Bumps [actions/checkout](https://github.com/actions/checkout) from 2 to 3.
- [Release notes](https://github.com/actions/checkout/releases)
- [Changelog](https://github.com/actions/checkout/blob/main/CHANGELOG.md)
- [Commits](https://github.com/actions/checkout/compare/v2...v3)

---
updated-dependencies:
- dependency-name: actions/checkout
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <support@github.com>

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

.github/workflows/codecov.yml

@@ -23,7 +23,7 @@ jobs:
       PYTHON_VERSION: ${{ matrix.python-version }}
 
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v3
 
       - name: Setup Python environment
         uses: ./.github/actions/setup-python

.github/workflows/publish-bot.yml

@@ -15,7 +15,7 @@ jobs:
     name: nonebot2 publish bot
     steps:
       - name: Checkout code
-        uses: actions/checkout@v2
+        uses: actions/checkout@v3
         with:
           token: ${{ secrets.GH_TOKEN }}
 

.github/workflows/release-drafter.yml

@@ -18,7 +18,7 @@ jobs:
       group: pull-request-changelog
       cancel-in-progress: true
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v3
         with:
           token: ${{ secrets.GH_TOKEN }}
 
@@ -54,7 +54,7 @@ jobs:
     if: startsWith(github.ref, 'refs/tags/')
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v3
 
       - name: Setup Python Environment
         uses: ./.github/actions/setup-python

.github/workflows/release.yml

@@ -8,7 +8,7 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v3
         with:
           ref: master
           token: ${{ secrets.GH_TOKEN }}

.github/workflows/website-deploy.yml

@@ -13,7 +13,7 @@ jobs:
       cancel-in-progress: true
 
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v3
 
       - name: Setup Python Environment
         uses: ./.github/actions/setup-python

.github/workflows/website-preview.yml

@@ -11,7 +11,7 @@ jobs:
       cancel-in-progress: true
 
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v3
         with:
           ref: ${{ github.event.pull_request.head.sha }}