Bump actions/download-artifact from 3.0.2 to 4.1.8

Bumps [actions/download-artifact](https://github.com/actions/download-artifact) from 3.0.2 to 4.1.8.
- [Release notes](https://github.com/actions/download-artifact/releases)
- [Commits](actions/download-artifact@v3.0.2...v4.1.8)

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

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

.github/workflows/build-snap.yml

@@ -52,7 +52,7 @@ jobs:
           sudo apt-get -y install open-iscsi
           sudo systemctl enable iscsid
       - name: Fetch snap
-        uses: actions/download-artifact@v3.0.2
+        uses: actions/download-artifact@v4.1.8
         with:
           name: microk8s.snap
           path: build
@@ -77,7 +77,7 @@ jobs:
           sudo apt-get -y install open-iscsi
           sudo systemctl enable iscsid
       - name: Fetch snap
-        uses: actions/download-artifact@v3.0.2
+        uses: actions/download-artifact@v4.1.8
         with:
           name: microk8s.snap
           path: build
@@ -107,7 +107,7 @@ jobs:
           sudo apt-get -y install open-iscsi
           sudo systemctl enable iscsid
       - name: Fetch snap
-        uses: actions/download-artifact@v3.0.2
+        uses: actions/download-artifact@v4.1.8
         with:
           name: microk8s.snap
           path: build
@@ -140,7 +140,7 @@ jobs:
           sudo apt-get -y install open-iscsi
           sudo systemctl enable iscsid
       - name: Fetch snap
-        uses: actions/download-artifact@v3.0.2
+        uses: actions/download-artifact@v4.1.8
         with:
           name: microk8s.snap
           path: build
@@ -165,7 +165,7 @@ jobs:
           sudo pip3 install --upgrade pip
           sudo pip3 install -U pytest sh requests
       - name: Fetch snap
-        uses: actions/download-artifact@v3.0.2
+        uses: actions/download-artifact@v4.1.8
         with:
           name: microk8s.snap
           path: build
@@ -184,7 +184,7 @@ jobs:
       - name: Checking out repo
         uses: actions/checkout@v4
       - name: Fetch snap
-        uses: actions/download-artifact@v3.0.2
+        uses: actions/download-artifact@v4.1.8
         with:
           name: microk8s.snap
           path: build
@@ -206,7 +206,7 @@ jobs:
       - name: Checking out repo
         uses: actions/checkout@v4
       - name: Fetch snap
-        uses: actions/download-artifact@v3.0.2
+        uses: actions/download-artifact@v4.1.8
         with:
           name: microk8s.snap
           path: build