chore(deps): update github artifact actions

Author: renovate[bot]

.github/workflows/main.yml

@@ -52,7 +52,7 @@ jobs:
           COVERAGE_FILE: ".coverage.${{ matrix.python_version }}"
 
       - name: Store coverage file
-        uses: actions/upload-artifact@v5
+        uses: actions/upload-artifact@v6
         with:
           name: coverage-${{ matrix.python_version }}
           path: .coverage.${{ matrix.python_version }}
@@ -72,7 +72,7 @@ jobs:
     steps:
       - uses: actions/checkout@v5
 
-      - uses: actions/download-artifact@v6
+      - uses: actions/download-artifact@v7
         id: download
         with:
           pattern: coverage-*
@@ -86,7 +86,7 @@ jobs:
           MERGE_COVERAGE_FILES: true
 
       - name: Store Pull Request comment to be posted
-        uses: actions/upload-artifact@v5
+        uses: actions/upload-artifact@v6
         if: steps.coverage_comment.outputs.COMMENT_FILE_WRITTEN == 'true'
         with:
           name: python-coverage-comment-action