chore(ci): fix our npm caching strategy for our e2e nextjs tests (#655)

* chore(ci): fix our npm caching strategy for our e2e nextjs tests

* chore(ci): allow e2e action to be tested under some PRs

* chore(ci): typo in workflow action path

* chore: update branch name

Co-authored-by: João Antunes <joao@netlify.com>

Co-authored-by: Eduardo Bouças <mail@eduardoboucas.com>
Co-authored-by: kodiakhq[bot] <49736102+kodiakhq[bot]@users.noreply.github.com>

.github/workflows/e2e-nextjs.yml

@@ -2,9 +2,9 @@ name: Next.js Integration test
 
 on:
   pull_request:
-    branches: [main]
-    # Run on release PRs only
-    paths: ['CHANGELOG.md']
+    branches: [main, 'chore/ci-e2e-nextjs']
+    # Run on release PRs only, or changes to this same file
+    paths: ['CHANGELOG.md', '.github/workflows/e2e-nextjs.yml']
 
 jobs:
   integration:
@@ -32,6 +32,11 @@ jobs:
         with:
           node-version: '*'
           cache: 'npm'
+          # We need to add each of the lockfile paths so that the global npm cache is populated accordingly
+          cache-dependency-path: |
+            zip-it-and-ship-it/package-lock.json
+            netlify-plugin-nextjs/package-lock.json
+            netlify-cli/npm-shrinkwrap.json
       - name: Installing netlify-cli
         run: npm ci
         working-directory: netlify-cli