Update actions/checkout action to v5

Author: renovate[bot]

.github/workflows/benchmark.yml

@@ -11,7 +11,7 @@ jobs:
   benchmark:
     runs-on: ubuntu-24.04
     steps:
-    - uses: actions/checkout@v4
+    - uses: actions/checkout@v5
     - uses: actions/setup-python@v5
       with:
         python-version: '3.13'

.github/workflows/release.yml

@@ -14,7 +14,7 @@ jobs:
   build-sdist:
     runs-on: ubuntu-24.04
     steps:
-    - uses: actions/checkout@v4
+    - uses: actions/checkout@v5
     - uses: actions/setup-python@v5
       with:
         python-version: '3.13'
@@ -41,7 +41,7 @@ jobs:
         - 'pypy-3.9'
         - 'pypy-3.10'
     steps:
-    - uses: actions/checkout@v4
+    - uses: actions/checkout@v5
     - uses: actions/setup-python@v5
       with:
         python-version: "${{ matrix.python-version }}"
@@ -67,7 +67,7 @@ jobs:
         - pp39-pypy39_pp73
         - pp310-pypy310_pp73
     steps:
-    - uses: actions/checkout@v4
+    - uses: actions/checkout@v5
     - run: pip install setuptools
     - run: /opt/python/${{ matrix.python-version }}/bin/pip wheel .
     - run: auditwheel repair arc4-*-linux*.whl --plat manylinux_2_28_x86_64

.github/workflows/test.yml

@@ -15,7 +15,7 @@ jobs:
         - 'pypy-3.9'
         - 'pypy-3.10'
     steps:
-    - uses: actions/checkout@v4
+    - uses: actions/checkout@v5
     - uses: actions/setup-python@v5
       with:
         python-version: "${{ matrix.python-version }}"
@@ -56,7 +56,7 @@ jobs:
   lint:
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v4
+    - uses: actions/checkout@v5
     - name: clang-format
       run: clang-format --Werror --dry-run arc4.c
     - run: pip install . flake8 mypy pygments restructuredtext_lint