hil simplify skip board from previous run

.github/workflows/build.yml

@@ -198,6 +198,17 @@ jobs:
     needs: hil-build
     runs-on: [self-hosted, X64, hathach, hardware-in-the-loop]
     steps:
+      - name: Get Skip Boards from previous run
+        if: github.run_attempt != '1'
+        run: |
+          if [ -f "${{ env.HIL_JSON }}.skip" ]; then
+            SKIP_BOARDS=$(cat "${{ env.HIL_JSON }}.skip")
+          else
+            SKIP_BOARDS=""
+          fi
+          echo "SKIP_BOARDS=$SKIP_BOARDS"
+          echo "SKIP_BOARDS=$SKIP_BOARDS" >> $GITHUB_ENV
+
       - name: Clean workspace
         run: |
           echo "Cleaning up for the first run"
@@ -213,25 +224,8 @@ jobs:
           path: cmake-build
           merge-multiple: true
 
-      - name: Cache skip list
-        uses: actions/cache@v4
-        with:
-          path: ${{ env.HIL_JSON }}.skip
-          key: hil-skip-${{ github.run_id }}-${{ github.run_attempt }}
-          restore-keys: |
-            hil-skip-${{ github.run_id }}-
-
       - name: Test on actual hardware
         run: |
-          ls cmake-build/
-
-          # Skip boards that passed with previous run, file is generated by hil_test.py
-          SKIP_BOARDS=""
-          if [ -f ${{ env.HIL_JSON }}.skip ]; then
-            SKIP_BOARDS=$(cat "${HIL_JSON}.skip")
-          fi
-          echo "SKIP_BOARDS=$SKIP_BOARDS"
-
           python3 test/hil/hil_test.py ${{ env.HIL_JSON }} $SKIP_BOARDS
 
   # ---------------------------------------