Bump actions/download-artifact from 6 to 7 in /.github/workflows

Bumps [actions/download-artifact](https://github.com/actions/download-artifact) from 6 to 7.
- [Release notes](https://github.com/actions/download-artifact/releases)
- [Commits](actions/download-artifact@v6...v7)

---
updated-dependencies:
- dependency-name: actions/download-artifact
  dependency-version: '7'
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

Author: dependabot[bot]

.github/workflows/pkg.yml

@@ -96,11 +96,11 @@ jobs:
         with:
           ssh-private-key: ${{ secrets.WWW_SSH_KEY }}
           ssh-host: www.thirdlaw.tech
-      - uses: actions/download-artifact@v6
+      - uses: actions/download-artifact@v7
         with:
           name: noble_clasp
           path: noble
-      - uses: actions/download-artifact@v6
+      - uses: actions/download-artifact@v7
         with:
           name: noble_cando
           path: noble
@@ -182,11 +182,11 @@ jobs:
         with:
           ssh-private-key: ${{ secrets.WWW_SSH_KEY }}
           ssh-host: www.thirdlaw.tech
-      - uses: actions/download-artifact@v6
+      - uses: actions/download-artifact@v7
         with:
           name: bookworm_clasp
           path: bookworm
-      - uses: actions/download-artifact@v6
+      - uses: actions/download-artifact@v7
         with:
           name: bookworm_cando
           path: bookworm
@@ -278,11 +278,11 @@ jobs:
         with:
           gpg_private_key: ${{ secrets.PKG_GPG_PRIVATE_KEY }}
           passphrase: ${{ secrets.PKG_GPG_PASSPHRASE }}
-      - uses: actions/download-artifact@v6
+      - uses: actions/download-artifact@v7
         with:
           name: arch_clasp
           path: arch
-      - uses: actions/download-artifact@v6
+      - uses: actions/download-artifact@v7
         with:
           name: arch_cando
           path: arch
@@ -305,7 +305,7 @@ jobs:
         with:
           ssh-private-key: ${{ secrets.WWW_SSH_KEY }}
           ssh-host: www.thirdlaw.tech
-      - uses: actions/download-artifact@v6
+      - uses: actions/download-artifact@v7
         with:
           name: arch_repo
           path: arch