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] <support@github.com>

.github/workflows/packages.yml

@@ -37,7 +37,7 @@ jobs:
     runs-on: ubuntu-latest
     container: ubuntu:xenial
     steps:
-      - uses: actions/download-artifact@v3
+      - uses: actions/download-artifact@v4
         with:
           name: sdist
       - name: install build requistes
@@ -78,7 +78,7 @@ jobs:
     runs-on: ubuntu-latest
     container: ubuntu:xenial
     steps:
-      - uses: actions/download-artifact@v3
+      - uses: actions/download-artifact@v4
         with:
           name: debs
       - name: install generated debs
@@ -93,7 +93,7 @@ jobs:
     runs-on: ubuntu-latest
     container: ubuntu:xenial
     steps:
-      - uses: actions/download-artifact@v3
+      - uses: actions/download-artifact@v4
         with:
           name: debs
       - name: install generated debs

.github/workflows/release.yml

@@ -65,7 +65,7 @@ jobs:
     runs-on: ubuntu-latest
     container: ubuntu:xenial
     steps:
-      - uses: actions/download-artifact@v3
+      - uses: actions/download-artifact@v4
         with:
           name: sdist
       - name: install build requistes
@@ -102,10 +102,10 @@ jobs:
     name: Upload release artefacts
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/download-artifact@v3
+      - uses: actions/download-artifact@v4
         with:
           name: debs
-      - uses: actions/download-artifact@v3
+      - uses: actions/download-artifact@v4
         with:
           name: rpms
       - name: Create Release