fix(ci): pin snap artifact downloads to valid action

Signed-off-by: Drew Newberry <anewberry@nvidia.com>

Author: drew

.github/workflows/snap-package.yml

@@ -77,19 +77,19 @@ jobs:
           sudo snap install snapcraft --classic
 
       - name: Download prebuilt CLI binary
-        uses: actions/download-artifact@3e5f45b2cfb9172054b40e67214ff5f5447ce83dd # v8
+        uses: actions/download-artifact@3e5f45b2cfb9172054b4087a40e8e0b5a5461e7c # v8.0.1
         with:
           name: cli-linux-${{ matrix.arch }}
           path: prebuilt/cli
 
       - name: Download prebuilt gateway binary
-        uses: actions/download-artifact@3e5f45b2cfb9172054b40e67214ff5f5447ce83dd # v8
+        uses: actions/download-artifact@3e5f45b2cfb9172054b4087a40e8e0b5a5461e7c # v8.0.1
         with:
           name: gateway-binary-linux-${{ matrix.arch }}
           path: prebuilt/gateway
 
       - name: Download prebuilt sandbox binary
-        uses: actions/download-artifact@3e5f45b2cfb9172054b40e67214ff5f5447ce83dd # v8
+        uses: actions/download-artifact@3e5f45b2cfb9172054b4087a40e8e0b5a5461e7c # v8.0.1
         with:
           name: supervisor-binary-linux-${{ matrix.arch }}
           path: prebuilt/sandbox