chore(deps): bump actions/download-artifact from 4 to 5

Bumps [actions/download-artifact](https://github.com/actions/download-artifact) from 4 to 5.
- [Release notes](https://github.com/actions/download-artifact/releases)
- [Commits](actions/download-artifact@v4...v5)

---
updated-dependencies:
- dependency-name: actions/download-artifact
  dependency-version: '5'
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

Author: dependabot[bot]

.github/workflows/ci.yml

@@ -294,12 +294,12 @@ jobs:
           cache: true
 
       - name: Download CLI artifact
-        uses: actions/download-artifact@v4
+        uses: actions/download-artifact@v5
         with:
           name: ftl-linux-amd64
 
       - name: Download WASM components
-        uses: actions/download-artifact@v4
+        uses: actions/download-artifact@v5
         with:
           name: wasm-components
           path: components/

.github/workflows/release-go-cli.yml

@@ -131,7 +131,7 @@ jobs:
       - uses: actions/checkout@v4
 
       - name: Download all artifacts
-        uses: actions/download-artifact@v4
+        uses: actions/download-artifact@v5
         with:
           path: artifacts
 

.github/workflows/release-sdk-python.yml

@@ -147,7 +147,7 @@ jobs:
 
     steps:
     - name: Download distribution packages
-      uses: actions/download-artifact@v4
+      uses: actions/download-artifact@v5
       with:
         name: python-package-distributions
         path: dist/