ci: bump actions/checkout v4 → v5

Author: muhammetsafak

.github/workflows/ci.yml

@@ -17,7 +17,7 @@ jobs:
       matrix:
         python: ['3.9', '3.10', '3.11', '3.12', '3.13']
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
 
       - name: Setup Python
         uses: actions/setup-python@v5
@@ -55,7 +55,7 @@ jobs:
           --health-timeout 5s
           --health-retries 15
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
 
       - name: Setup Python
         uses: actions/setup-python@v5

.github/workflows/release.yml

@@ -18,7 +18,7 @@ jobs:
       id-token: write   # PyPI Trusted Publishing (OIDC) — no API token needed
       contents: write   # create the GitHub release
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
 
       - name: Setup Python
         uses: actions/setup-python@v5