Bump actions/download-artifact from 5 to 6 (#31)

Bumps [actions/download-artifact](https://github.com/actions/download-artifact) from 5 to 6.
- [Release notes](https://github.com/actions/download-artifact/releases)
- [Commits](actions/download-artifact@v5...v6)

---
updated-dependencies:
- dependency-name: actions/download-artifact
  dependency-version: '6'
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

Author: dependabot[bot]

.github/workflows/release.yml

@@ -97,7 +97,7 @@ jobs:
             README.md
             LICENSE
           sparse-checkout-cone-mode: false
-      - uses: actions/download-artifact@v5
+      - uses: actions/download-artifact@v6
         with:
           name: binaries
           path: dist
@@ -148,7 +148,7 @@ jobs:
           sparse-checkout-cone-mode: false
           ref: ${{ inputs.version }}
 
-      - uses: actions/download-artifact@v5
+      - uses: actions/download-artifact@v6
         with:
           name: binaries
           path: dist

.github/workflows/test.yml

@@ -80,7 +80,7 @@ jobs:
           PATTERN: spc-${{ matrix.spc-variant }}.tar.gz
           GH_TOKEN: ${{ github.token }}
 
-      - uses: actions/download-artifact@v5
+      - uses: actions/download-artifact@v6
         with:
           name: phar
           path: phar
@@ -142,7 +142,7 @@ jobs:
       - run: echo OS="$(go env GOOS)" >> $GITHUB_ENV
       - run: echo ARCH="$(go env GOARCH)" >> $GITHUB_ENV
 
-      - uses: actions/download-artifact@v5
+      - uses: actions/download-artifact@v6
         with:
           name: composer-semver_${{ matrix.variant }}
           path: out