chore: bump actions/checkout from 3 to 4 (#172)

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

Author: dependabot[bot]

.github/workflows/conda.yml

@@ -27,7 +27,7 @@ jobs:
         shell: "bash -l {0}"
 
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
 
       - name: Get conda
         uses: conda-incubator/setup-miniconda@v2.2.0

.github/workflows/pip.yml

@@ -22,7 +22,7 @@ jobs:
     runs-on: ${{ matrix.platform }}
 
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
 
     - uses: actions/setup-python@v4
       with:
@@ -51,7 +51,7 @@ jobs:
           mingw-w64-x86_64-python-pip
           mingw-w64-x86_64-python-wheel
 
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
 
     - name: Install pybind11
       # This is required because --no-build-isolation disable dependences

.github/workflows/wheels.yml

@@ -19,7 +19,7 @@ jobs:
     name: Build SDist
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
 
     - name: Build SDist
       run: pipx run build --sdist
@@ -41,7 +41,7 @@ jobs:
         os: [ubuntu-latest, windows-latest, macos-latest]
 
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
 
     - uses: pypa/cibuildwheel@v2.15
       env: