Update actions

Author: lpil

.github/workflows/ci.yaml

@@ -406,7 +406,7 @@ jobs:
       - run: cargo build
 
       - name: Upload artifact (Ubuntu)
-        uses: actions/upload-artifact@v6
+        uses: actions/upload-artifact@v7
         with:
           name: gleam
           path: target/debug/gleam
@@ -436,7 +436,7 @@ jobs:
           rebar3-version: "3"
 
       - name: Download Gleam binary from previous job
-        uses: actions/download-artifact@v7
+        uses: actions/download-artifact@v8
         with:
           name: gleam
           path: ./test

.github/workflows/release.yaml

@@ -90,7 +90,7 @@ jobs:
 
     steps:
       - name: Download Artifacts
-        uses: actions/download-artifact@v7
+        uses: actions/download-artifact@v8
         with:
           pattern: release-*
           merge-multiple: true