Update actions/cache digest to 5a3ec84 (#21)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

.github/workflows/test.yaml

@@ -51,7 +51,7 @@ jobs:
           version-type: strict
 
       - name: Restore Build Cache
-        uses: actions/cache@d4323d4df104b026a6aa633fdb11d772146be0bf # v4
+        uses: actions/cache@5a3ec84eff668545956fd18022155c47e93e2684 # v4
         with:
           path: |
             ~/.cache/gleam