Update npm-publish-latest.yml

This change
- splits the jobs into a build job and a publish job
- prevents the publish job from running on pull requests

.github/workflows/npm-publish-latest.yml

@@ -11,7 +11,43 @@ on:
     types: [created]
 
 jobs:
-  publish-latest:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v3
+
+      - uses: actions/setup-node@v3
+        with:
+          node-version: 20
+
+      - uses: pnpm/action-setup@v3
+        name: Install pnpm
+        with:
+          version: 8
+          run_install: false
+
+      - name: Get pnpm store directory
+        shell: bash
+        run: |
+          echo "STORE_PATH=$(pnpm store path --silent)" >> $GITHUB_ENV
+
+      - uses: actions/cache@v3
+        name: Setup pnpm cache
+        with:
+          path: ${{ env.STORE_PATH }}
+          key: ${{ runner.os }}-pnpm-store-${{ hashFiles('**/pnpm-lock.yaml') }}
+          restore-keys: |
+            ${{ runner.os }}-pnpm-store-
+      
+      - name: Install dependencies
+        run: pnpm install
+
+      - name: Build
+        run: pnpm run ci:build
+
+  publish:
+    needs: build
+    if: github.event_name != 'pull_request'
     runs-on: ubuntu-latest
     permissions:
       contents: read
@@ -46,10 +82,7 @@ jobs:
       - name: Install dependencies
         run: pnpm install
 
-      - name: "Build"
-        run: pnpm run ci:build
-
-      - name: "Publish"
+      - name: Publish
         run: pnpm run ci:publish
         env:
           NODE_AUTH_TOKEN: ${{secrets.NPM_TOKEN}}