Bump actions/download-artifact from 3 to 4 (#1673)

* 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]>

* bump upload-artifact to v4

---------

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
Co-authored-by: Stefan Appelhoff <[email protected]>

.github/workflows/schemacode_ci.yml

@@ -44,7 +44,7 @@ jobs:
         run: python -m build tools/schemacode
       - name: "Check distribution metadata"
         run: twine check tools/schemacode/dist/*
-      - uses: actions/upload-artifact@v3
+      - uses: actions/upload-artifact@v4
         with:
           name: dist
           path: tools/schemacode/dist/
@@ -76,7 +76,7 @@ jobs:
         run: python -c "import sys; print(sys.version)"
 
       - name: "Fetch packages"
-        uses: actions/download-artifact@v3
+        uses: actions/download-artifact@v4
         with:
           name: dist
           path: dist/
@@ -91,7 +91,7 @@ jobs:
               --cov-append --cov-report=xml --cov=bidsschematools --doctest-modules
 
       - name: Upload artifacts
-        uses: actions/upload-artifact@v3
+        uses: actions/upload-artifact@v4
         with:
           name: unit_${{ matrix.os }}_${{ matrix.python-version }}
           path: coverage.xml
@@ -108,7 +108,7 @@ jobs:
         python-version: ["3.11"]
     steps:
       - name: "Fetch packages"
-        uses: actions/download-artifact@v3
+        uses: actions/download-artifact@v4
         with:
           name: dist
           path: dist/
@@ -146,7 +146,7 @@ jobs:
         run: python -m pytest --pyargs bidsschematools -m "validate_schema" --cov-append --cov-report=xml --cov=bidsschematools
 
       - name: Upload artifacts
-        uses: actions/upload-artifact@v3
+        uses: actions/upload-artifact@v4
         with:
           name: schema_validation
           path: coverage.xml
@@ -161,7 +161,7 @@ jobs:
         uses: actions/checkout@v4
 
       - name: Download artifacts
-        uses: actions/download-artifact@v3
+        uses: actions/download-artifact@v4
 
       - name: Upload to CodeCov
         uses: codecov/codecov-action@v3