Bump actions/checkout from 3 to 4 (#8169)

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/benchmarks-last-release.yml

@@ -17,7 +17,7 @@ jobs:
     steps:
       # We need the full repo to avoid this issue
       # https://github.com/actions/checkout/issues/23
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
         with:
           fetch-depth: 0
 

.github/workflows/benchmarks.yml

@@ -17,7 +17,7 @@ jobs:
     steps:
       # We need the full repo to avoid this issue
       # https://github.com/actions/checkout/issues/23
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
         with:
           fetch-depth: 0
 

.github/workflows/ci-additional.yaml

@@ -22,7 +22,7 @@ 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
@@ -44,7 +44,7 @@ jobs:
       PYTHON_VERSION: "3.10"
 
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
         with:
           fetch-depth: 0 # Fetch all history for all branches and tags.
 
@@ -92,7 +92,7 @@ jobs:
       PYTHON_VERSION: "3.10"
 
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
         with:
           fetch-depth: 0 # Fetch all history for all branches and tags.
 
@@ -146,7 +146,7 @@ jobs:
       PYTHON_VERSION: "3.9"
 
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
         with:
           fetch-depth: 0 # Fetch all history for all branches and tags.
 
@@ -205,7 +205,7 @@ jobs:
       fail-fast: false
 
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
         with:
           fetch-depth: 0 # Fetch all history for all branches and tags.
 

.github/workflows/ci.yaml

@@ -22,7 +22,7 @@ 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
@@ -60,7 +60,7 @@ jobs:
             python-version: "3.10"
             os: ubuntu-latest
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
         with:
           fetch-depth: 0 # Fetch all history for all branches and tags.
       - name: Set environment variables

.github/workflows/nightly-wheels.yml

@@ -8,7 +8,7 @@ jobs:
     runs-on: ubuntu-latest
     if: github.repository == 'pydata/xarray'
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
         with:
           fetch-depth: 0
       - uses: actions/setup-python@v4

.github/workflows/pypi-release.yaml

@@ -12,7 +12,7 @@ jobs:
     runs-on: ubuntu-latest
     if: github.repository == 'pydata/xarray'
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
         with:
           fetch-depth: 0
       - uses: actions/setup-python@v4

.github/workflows/upstream-dev-ci.yaml

@@ -25,7 +25,7 @@ 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
@@ -52,7 +52,7 @@ jobs:
       matrix:
         python-version: ["3.10"]
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
         with:
           fetch-depth: 0 # Fetch all history for all branches and tags.
       - name: Set up conda environment
@@ -112,7 +112,7 @@ jobs:
       matrix:
         python-version: ["3.10"]
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
         with:
           fetch-depth: 0 # Fetch all history for all branches and tags.
       - name: Set up conda environment