ci: save LP cache for integration tests

.github/workflows/e2e-integration-test.yml

@@ -59,8 +59,11 @@ jobs:
 
       - run: chmod a+x ./lightpanda
 
-      # Always activate cache
-      - run: mkdir -p /tmp/lp-cache
+      - name: LP Cache
+        id: lp-cache
+        uses: actions/cache@v5
+        with:
+          path: /tmp/lp-cache
 
       - name: run end to end integration tests
         continue-on-error: true

.github/workflows/e2e-test.yml

@@ -103,9 +103,6 @@ jobs:
       - if: matrix.wba == true
         run: echo "${{ secrets.WBA_PRIVATE_KEY_PEM }}" > private_key.pem
 
-      # Always activate cache
-      - run: mkdir -p /tmp/lp-cache
-
       - id: args
         name: build LP args
         run: |
@@ -162,9 +159,6 @@ jobs:
       - if: matrix.wba == true
         run: echo "${{ secrets.WBA_PRIVATE_KEY_PEM }}" > private_key.pem
 
-      # Always activate cache
-      - run: mkdir -p /tmp/lp-cache
-
       - id: args
         name: build LP args
         run: |