Bump actions/checkout from 2 to 3

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>

.github/workflows/black-and-deploy.yml

@@ -8,7 +8,7 @@ jobs:
   build:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v3
         with:  # https://github.com/stefanzweifel/git-auto-commit-action#checkout-the-correct-branch
             ref: ${{ github.head_ref }}
       - uses: actions/setup-python@v1
@@ -26,10 +26,10 @@ jobs:
   deploy:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v3
       - name: Run a one-line script
         run: echo Hello, world!
-      - uses: actions/checkout@master
+      - uses: actions/checkout@v3
       - name: copy file via ssh password
         uses: appleboy/scp-action@master
         with:

.github/workflows/build.yml

@@ -12,7 +12,7 @@ jobs:
         os: [macOS-latest, ubuntu-latest, windows-latest]
 
     steps:
-    - uses: actions/checkout@v3.2.0
+    - uses: actions/checkout@v3
     - name: Set up Python ${{ matrix.python-version }}
       uses: actions/setup-python@v4
       with: