Bump actions/checkout from 5 to 6 (#31)

Author: dependabot[bot]

.github/workflows/pypi.yml

@@ -30,7 +30,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
         with:
           # Need to fetch more than the last commit so that setuptools_scm can
           # create the correct version string. If the number of commits since
@@ -89,7 +89,7 @@ jobs:
 
     steps:
       - name: Checkout
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
         with:
           # The GitHub token is preserved by default but this job doesn't need
           # to be able to push to GitHub.

.github/workflows/style.yml

@@ -25,7 +25,7 @@ jobs:
       REQUIREMENTS: env/requirements-build.txt env/requirements-style.txt
     steps:
       - name: Checkout
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
         with:
           persist-credentials: false
 

.github/workflows/test.yml

@@ -54,7 +54,7 @@ jobs:
 
       # Checks-out your repository under $GITHUB_WORKSPACE
       - name: Checkout
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
         with:
           # Need to fetch more than the last commit so that setuptools_scm can
           # create the correct version string. If the number of commits since