chore(deps): bump actions/download-artifact from 3 to 4

Bumps [actions/download-artifact](https://github.com/actions/download-artifact) from 3 to 4.
- [Release notes](https://github.com/actions/download-artifact/releases)
- [Commits](actions/download-artifact@v3...v4)

---
updated-dependencies:
- dependency-name: actions/download-artifact
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

.github/workflows/compilers.yml

@@ -275,7 +275,7 @@ jobs:
         run: pip install tabulate pandas
 
       - name: Download reports
-        uses: actions/download-artifact@v3
+        uses: actions/download-artifact@v4
         with:
           name: compat
           path: .github/compat/new

.github/workflows/release.yml

@@ -316,7 +316,7 @@ jobs:
         run: python update_flopy.py
 
       - name: Download pre-built binaries
-        uses: actions/download-artifact@v3
+        uses: actions/download-artifact@v4
         with:
           name: bin-${{ runner.os }}
           path: bin
@@ -466,7 +466,7 @@ jobs:
           eval "$cmd"
 
       - name: Download artifacts
-        uses: actions/download-artifact@v3
+        uses: actions/download-artifact@v4
         with:
           path: ${{ needs.build.outputs.distname }}_${{ matrix.ostag }}