chore(deps): update actions/checkout action to v6

Author: renovate-bot

.github/workflows/codeql-analysis.yml

@@ -39,7 +39,7 @@ jobs:
 
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v3
+        uses: actions/checkout@8e8c483db84b4bee98b60c0593521ed34d9990e8 # v6
       # Initializes the CodeQL tools for scanning.
       - name: Initialize CodeQL
         uses: github/codeql-action/init@v2

.github/workflows/pypi-publish.yml

@@ -11,7 +11,7 @@ jobs:
       id-token: write
     steps:
       - name: Checkout sources
-        uses: actions/checkout@v4
+        uses: actions/checkout@8e8c483db84b4bee98b60c0593521ed34d9990e8 # v6
       - uses: actions/setup-python@v5
         with:
           python-version: '3.11'