Bump actions/checkout from 3 to 4 (#316)

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>

.github/workflows/ci.yaml

@@ -21,7 +21,7 @@ jobs:
     outputs:
       triggered: ${{ steps.detect-trigger.outputs.trigger-found }}
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
         with:
           fetch-depth: 2
       - uses: xarray-contrib/ci-trigger@v1
@@ -43,7 +43,7 @@ jobs:
         os: ["ubuntu-latest"]
         python-version: ["3.8", "3.9", "3.10"]
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - name: Create conda environment
         uses: mamba-org/setup-micromamba@v1.4.3
         with:
@@ -78,7 +78,7 @@ jobs:
       run:
         shell: bash -l {0}
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - name: Create conda environment
         uses: mamba-org/provision-with-micromamba@main
         with:
@@ -124,7 +124,7 @@ jobs:
       run:
         shell: bash -l {0}
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - name: Create conda environment
         uses: mamba-org/provision-with-micromamba@main
         with:

.github/workflows/full_archive_ci.yaml

@@ -20,7 +20,7 @@ jobs:
         catalog: ['main']
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
     - name: Cache conda
       uses: actions/cache@v3
       env:

.github/workflows/pythonpublish.yaml

@@ -9,7 +9,7 @@ jobs:
     runs-on: ubuntu-latest
     if: github.repository == 'jbusecke/xmip'
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
         with:
           fetch-depth: 0
       - uses: actions/setup-python@v4