Bump actions/download-artifact from 3 to 4.1.7 in /.github/workflows

Bumps [actions/download-artifact](https://github.com/actions/download-artifact) from 3 to 4.1.7.
- [Release notes](https://github.com/actions/download-artifact/releases)
- [Commits](actions/download-artifact@v3...v4.1.7)

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

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

.github/workflows/install-canary.yaml

@@ -81,7 +81,7 @@ jobs:
       - canary-installs-mamba
     steps:
       - name: Download all artifacts
-        uses: actions/download-artifact@v3
+        uses: actions/download-artifact@v4.1.7
       - name: show files
         run: |
           ls -la

.github/workflows/main.yaml

@@ -41,7 +41,7 @@ jobs:
     steps:
       - uses: actions/checkout@v3
       - name: Download patched test environment
-        uses: actions/download-artifact@v3
+        uses: actions/download-artifact@v4.1.7
         with:
           name: patched-environment
       - name: Setup python ${{ matrix.python-version }} conda environment