Merge pull request #838 from ipython/dependabot/github_actions/actions/checkout-4

Bump actions/checkout from 3 to 4

Author: minrk

.github/workflows/release.yml

@@ -22,7 +22,7 @@ jobs:
   build-release:
     runs-on: ubuntu-20.04
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - uses: actions/setup-python@v4
         with:
           python-version: 3.8

.github/workflows/test-docs.yml

@@ -19,7 +19,7 @@ jobs:
   test-docs:
     runs-on: ubuntu-22.04
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
         with:
           # make rediraffecheckdiff requires git history to compare current
           # commit with the main branch and previous releases.

.github/workflows/test.yml

@@ -50,7 +50,7 @@ jobs:
           - python: "3.11"
 
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
 
       - name: Cache conda environment
         uses: actions/cache@v3