Bump actions/download-artifact from 5 to 6

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] <support@github.com>

Author: dependabot[bot]

.github/workflows/project_ci.yml

@@ -60,7 +60,7 @@ jobs:
       - uses: actions/checkout@v5
         with:
           path: quickstarts
-      - uses: actions/download-artifact@v5
+      - uses: actions/download-artifact@v6
         with:
           name: wildfly-maven-repository
           path: .

.github/workflows/quickstart_ci.yml

@@ -178,7 +178,7 @@ jobs:
       - uses: actions/checkout@v5
         with:
           path: quickstarts
-      - uses: actions/download-artifact@v5
+      - uses: actions/download-artifact@v6
         with:
           name: wildfly-maven-repository
           path: .

.github/workflows/quickstart_ejb-txn-remote-call_ci.yml

@@ -143,7 +143,7 @@ jobs:
       - uses: actions/checkout@v5
         with:
           path: quickstarts
-      - uses: actions/download-artifact@v5
+      - uses: actions/download-artifact@v6
         with:
           name: wildfly-maven-repository
           path: .