Merge pull request #37860 from openedx/dependabot/github_actions/actions/download-artifact-7

build(deps): bump actions/download-artifact from 6 to 7

.github/workflows/unit-tests.yml

@@ -230,7 +230,7 @@ jobs:
     steps:
       - uses: actions/checkout@v6
       - name: collect pytest warnings files
-        uses: actions/download-artifact@v6
+        uses: actions/download-artifact@v7
         with:
           pattern: pytest-warnings-json-*
           merge-multiple: true
@@ -289,7 +289,7 @@ jobs:
           python-version: ${{ matrix.python-version }}
 
       - name: Download all artifacts
-        uses: actions/download-artifact@v6
+        uses: actions/download-artifact@v7
         with:
           pattern: coverage-*
           merge-multiple: true