chore: Don't upload artifacts on PRs

Author: nschonni

.github/workflows/alpine.yml

@@ -40,6 +40,7 @@ jobs:
         run: npm test
 
       - uses: actions/upload-artifact@v2
+        if: github.repository_owner == 'sass' && github.event_name != 'pull_request'
         with:
           name: ${{ matrix.node }}
           path: vendor/

.github/workflows/linux.yml

@@ -54,6 +54,7 @@ jobs:
         run: npm test
 
       - uses: actions/upload-artifact@v2
+        if: github.repository_owner == 'sass' && github.event_name != 'pull_request'
         with:
           name: ${{ matrix.node }}
           path: vendor/

.github/workflows/macos.yml

@@ -35,6 +35,7 @@ jobs:
         run: npm test
 
       - uses: actions/upload-artifact@v2
+        if: github.repository_owner == 'sass' && github.event_name != 'pull_request'
         with:
           name: ${{ matrix.node }}
           path: vendor/

.github/workflows/windows.yml

@@ -35,6 +35,7 @@ jobs:
         run: npm test
 
       - uses: actions/upload-artifact@v2
+        if: github.repository_owner == 'sass' && github.event_name != 'pull_request'
         with:
           name: ${{ matrix.node }}
           path: |