Still trying to get caching to work

.github/workflows/build-helloworld-vita.yml

@@ -13,16 +13,23 @@ jobs:
         uses: actions/checkout@v3
 
       - name: Cache VITASDK
-        id: cache-vitasdk
-        uses: actions/cache@v3
+        id: cache-vitasdk-restore
+        uses: actions/cache/restore@v3
         with:
-          path: ${VITASDK}
+          path: /usr/local/vitasdk
           key: ${{ runner.os }}-vitasdk
 
       - name: Install Vita Toolchain
         if: steps.cache-vitasdk.outputs.cache-hit != 'true'
         run: ./ci/install-vita-toolchain.sh
 
+      - name: Save VITASDK
+        id: cache-vitasdk-save
+        uses: actions/cache/save@v3
+        with:
+          path: /usr/local/vitasdk
+          key: ${{ steps.cache-vitasdk-restore.outputs.cache-primary-key }}
+
       - name: Install Libraries
         run: ./ci/install-libraries.sh