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>

Author: dependabot[bot]

.github/workflows/_extension_deploy.yml

@@ -92,7 +92,7 @@ jobs:
           cd duckdb
           git checkout ${{ inputs.duckdb_version }}
 
-      - uses: actions/download-artifact@v2
+      - uses: actions/download-artifact@v4.1.7
         with:
           name: ${{ inputs.extension_name }}-${{ inputs.duckdb_version }}-extension-${{matrix.duckdb_arch}}${{inputs.artifact_postfix}}${{startsWith(matrix.duckdb, 'wasm') && '.wasm' || ''}}
           path: |