Update pr-check.yml

The CI jobs are borked, editing directly. Here to add a cache key 

Signed-off-by: Dan Garfield <dan@codefresh.io>

Author: todaywasawesome

.github/workflows/pr-check.yml

@@ -16,6 +16,7 @@ jobs:
         with:
           node-version: '14'
           cache: npm
+          cache-key: ${{ runner.os }}-node-${{ hashFiles('**/package-lock.json') }}
       - name: Install Dependencies
         run: npm ci
       - name: Lint