Fix tests results upload (#3635)

* Fix tests results upload

* Checkout before and after running tests

* Add condition

.github/workflows/test262.yml

@@ -37,13 +37,13 @@ jobs:
             ~/.cargo/registry
           key: ${{ runner.os }}-cargo-test262-${{ hashFiles('**/Cargo.lock') }}
 
-      # Run the test suite and upload the results
       - name: Checkout GitHub pages
         uses: actions/checkout@v4
         with:
           ref: gh-pages
           path: gh-pages
 
+      # Run the test suite.
       - name: Run the test262 test suite
         run: |
           cd boa
@@ -100,6 +100,12 @@ jobs:
             ${{ steps.compare.outputs.comment }}
 
       # Commit changes to GitHub pages.
+      - name: Checkout GitHub pages
+        if: github.event_name == 'push'
+        uses: actions/checkout@v4
+        with:
+          ref: gh-pages
+          path: gh-pages
       - name: Commit files
         if: github.event_name == 'push'
         run: |