Bump actions/checkout from 3 to 4 (#30)

Bumps [actions/checkout](https://github.com/actions/checkout) from 3 to 4.
- [Release notes](https://github.com/actions/checkout/releases)
- [Changelog](https://github.com/actions/checkout/blob/main/CHANGELOG.md)
- [Commits](actions/checkout@v3...v4)

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

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

.github/workflows/build_and_test.yml

@@ -26,7 +26,7 @@ jobs:
         os: ['ubuntu-22.04', 'macos-12', 'windows-2022']
     runs-on: ${{ matrix.os }}
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
       with:
         fetch-depth: '0'
     - run: git fetch --depth=1 origin +refs/tags/*:refs/tags/* +refs/heads/*:refs/remotes/origin/*
@@ -112,7 +112,7 @@ jobs:
     needs: publish_to_pypi
     runs-on: ubuntu-22.04
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
       with:
         fetch-depth: '0'
     - name: Set up Python 3.10

.github/workflows/docs.yml

@@ -12,7 +12,7 @@ jobs:
     name: build docs
     runs-on: ubuntu-22.04
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
     - name: Set up Python 3.9
       uses: actions/setup-python@v4
       with:

.github/workflows/lint.yml

@@ -12,7 +12,7 @@ jobs:
     runs-on: ubuntu-22.04
 
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
     - name: Set up Python 3.x
       uses: actions/setup-python@v4
       with: