Bump actions/download-artifact from 2 to 4.1.7 in /.github/workflows

Bumps [actions/download-artifact](https://github.com/actions/download-artifact) from 2 to 4.1.7.
- [Release notes](https://github.com/actions/download-artifact/releases)
- [Commits](actions/download-artifact@v2...v4.1.7)

---
updated-dependencies:
- dependency-name: actions/download-artifact
  dependency-type: direct:production
...

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

.github/workflows/devbuild.yml

@@ -95,7 +95,7 @@ jobs:
       EXTRA_ENV: ${{ github.event.inputs.extra-env }}
     steps:
       - name: Retrieve sources
-        uses: actions/download-artifact@v2
+        uses: actions/download-artifact@v4.1.7
         with:
           name: sources
       - name: Configure core dumps

.github/workflows/package.yml

@@ -54,7 +54,7 @@ jobs:
       CLOUDSMITH_REPOSITORY: nxadm-pkgs/rakudo-pkg
     steps:
       - name: Retrieve sources
-        uses: actions/download-artifact@v2
+        uses: actions/download-artifact@v4.1.7
         with:
           name: sources
       - name: Create build environment
@@ -80,7 +80,7 @@ jobs:
     runs-on: ubuntu-20.04
     steps:
       - name: Download packages
-        uses: actions/download-artifact@v2
+        uses: actions/download-artifact@v4.1.7
         with:
           name: packages
           path: packages
@@ -98,11 +98,11 @@ jobs:
       CLOUDSMITH_API_KEY: ${{ secrets.CLOUDSMITH_API_KEY }}
     steps:
       - name: Retrieve sources
-        uses: actions/download-artifact@v2
+        uses: actions/download-artifact@v4.1.7
         with:
           name: sources
       - name: Download packages
-        uses: actions/download-artifact@v2
+        uses: actions/download-artifact@v4.1.7
         with:
           name: packages
           path: packages