chore(deps): 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] <[email protected]>

Author: dependabot[bot]

.github/workflows/deploy-dev-viewer.yml

@@ -62,7 +62,7 @@ jobs:
       name: development
     steps:
       - name: Download artifact
-        uses: actions/download-artifact@v3
+        uses: actions/download-artifact@v4
         with:
           path: oscal-viewer
       - name: Sign in to AWS

.github/workflows/deploy-prod-viewer.yml

@@ -65,7 +65,7 @@ jobs:
       url: https://viewer.oscal.io/
     steps:
       - name: Download artifact
-        uses: actions/download-artifact@v3
+        uses: actions/download-artifact@v4
         with:
           path: oscal-viewer
       - name: Sign in to AWS

.github/workflows/update-types.yml

@@ -81,7 +81,7 @@ jobs:
       - name: Install package dependencies
         run: npm ci
       - name: Fetch the artifact
-        uses: actions/download-artifact@v3
+        uses: actions/download-artifact@v4
         with:
           name: schema
           path: schema