Bump actions/download-artifact from 2 to 4.1.7 in /.github/workflows

Bumps [actions/download-artifact](https://github.com/actions/download-artifact) from 2 to 4.1.7.
- [Release notes](https://github.com/actions/download-artifact/releases)
- [Commits](actions/download-artifact@v2...v4.1.7)

---
updated-dependencies:
- dependency-name: actions/download-artifact
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

.github/workflows/test_branches.yml

@@ -650,7 +650,7 @@ jobs:
         key: pip-${{env.CACHE_VER}}.0-${{runner.os}}-3.8
 
     - name: Download build artifacts
-      uses: actions/download-artifact@v2
+      uses: actions/download-artifact@v4.1.7
       with:
         path: artifacts
 

.github/workflows/test_pr_and_main.yml

@@ -671,7 +671,7 @@ jobs:
         key: pip-${{env.CACHE_VER}}.0-${{runner.os}}-3.8
 
     - name: Download build artifacts
-      uses: actions/download-artifact@v2
+      uses: actions/download-artifact@v4.1.7
       with:
         path: artifacts