actions: cache always

.github/workflows/shared.yml

@@ -83,9 +83,10 @@ jobs:
           sudo chown $(whoami) /usr/local
 
       - name: Set up build cache
-        uses: actions/cache@v3
+        uses: actions/cache@v4
         with:
           key: ${{ matrix.target }}-cache-1
+          save-always: true
           path: |
             # # Cache bazel path on Linux.
             ~/.cache/bazel/_bazel_$(whoami)