Bump dawidd6/action-download-artifact from 2 to 6 in /.github/workflows

Bumps [dawidd6/action-download-artifact](https://github.com/dawidd6/action-download-artifact) from 2 to 6.
- [Release notes](https://github.com/dawidd6/action-download-artifact/releases)
- [Commits](dawidd6/action-download-artifact@v2...v6)

---
updated-dependencies:
- dependency-name: dawidd6/action-download-artifact
  dependency-type: direct:production
...

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

.github/workflows/docker-publish.yml

@@ -39,7 +39,7 @@ jobs:
         run: echo ::set-output name=docker_tag::$(echo ${GITHUB_REF} | cut -d'/' -f3)-${GITHUB_SHA}
 
       - name: Download artifact
-        uses: dawidd6/action-download-artifact@v2
+        uses: dawidd6/action-download-artifact@v6
         with:
           # Optional, GitHub token, a Personal Access Token with `public_repo` scope if needed
           # Required, if artifact is from a different repo
@@ -116,7 +116,7 @@ jobs:
         run: echo ::set-output name=docker_tag::$(echo ${GITHUB_REF} | cut -d'/' -f3)-${GITHUB_SHA}
 
       - name: Download artifact
-        uses: dawidd6/action-download-artifact@v2
+        uses: dawidd6/action-download-artifact@v6
         with:
           # Optional, GitHub token, a Personal Access Token with `public_repo` scope if needed
           # Required, if artifact is from a different repo
@@ -219,7 +219,7 @@ jobs:
           echo -n "${IMAGE_NAME_GHCR}"
 
       - name: Download artifact
-        uses: dawidd6/action-download-artifact@v2
+        uses: dawidd6/action-download-artifact@v6
         with:
           # Optional, GitHub token, a Personal Access Token with `public_repo` scope if needed
           # Required, if artifact is from a different repo