chore: disable cache for validation

Author: ci010

.github/workflows/validate.yml

@@ -12,12 +12,6 @@ jobs:
       uses: actions/setup-node@v1
       with:
         node-version: 12
-    - uses: actions/cache@v1
-      with:
-        path: ~/.npm
-        key: ${{ runner.os }}-node-${{ hashFiles('**/package-lock.json') }}
-        restore-keys: |
-          ${{ runner.os }}-node-
     - name: Install
       run: |
         npm ci