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] <support@github.com>

.github/workflows/ci.yml

@@ -79,7 +79,7 @@ jobs:
           path: ${{ env.WORKSPACE_INSTALL_PATH }}
 
       - name: Install artifact
-        uses: actions/download-artifact@v2
+        uses: actions/download-artifact@v4.1.7
         with:
           name: SoftRobots_${{ steps.sofa.outputs.run_branch }}_for-SOFA-${{ steps.sofa.outputs.sofa_version }}_${{ runner.os }}
           path: ${{ env.WORKSPACE_ARTIFACT_PATH }}
@@ -129,7 +129,7 @@ jobs:
     continue-on-error: true
     steps:
       - name: Get artifacts
-        uses: actions/download-artifact@v2
+        uses: actions/download-artifact@v4.1.7
         with:
           path: artifacts
 

.github/workflows/nighly-build.yml

@@ -66,7 +66,7 @@ jobs:
           path: ${{ env.WORKSPACE_INSTALL_PATH }}
 
       - name: Install artifact
-        uses: actions/download-artifact@v2
+        uses: actions/download-artifact@v4.1.7
         with:
           name: SoftRobots_master_nightly_${{ runner.os }}
           path: ${{ env.WORKSPACE_ARTIFACT_PATH }}
@@ -119,7 +119,7 @@ jobs:
         run: echo "::set-output name=date::$(date +'%Y-%m-%d (at %T)')"
 
       - name: Get artifacts
-        uses: actions/download-artifact@v2
+        uses: actions/download-artifact@v4.1.7
         with:
           path: artifacts