build: fix update-wpt workflow

Author: JonasBa

.github/workflows/update-wpt.yml

@@ -27,12 +27,12 @@ jobs:
         subsystem: ${{ fromJSON(github.event.inputs.subsystems || '["url", "urlpattern", "WebCryptoAPI"]') }}
 
     steps:
-      - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683  # v4.2.2
+      - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
         with:
           persist-credentials: false
 
       - name: Install Node.js
-        uses: actions/setup-node@1d0ff469b7ec7b3cb9d8673fde0c81c44821de2a  # v4.2.0
+        uses: actions/setup-node@1d0ff469b7ec7b3cb9d8673fde0c81c44821de2a # v4.2.0
         with:
           node-version: ${{ env.NODE_VERSION }}
 
@@ -70,7 +70,11 @@ jobs:
       - name: Open or update PR for the subsystem update
         uses: gr2m/create-or-update-pull-request-action@77596e3166f328b24613f7082ab30bf2d93079d5
         with:
-          branch: actions/update-wpt-${{ matrix.subsystem }}
+          # The create-or-update-pull-request-action matches the branch name by prefix,
+          # which is why we need to add the -wpt suffix. If we dont do that, we risk matching wrong PRs,
+          # like for example "url" mistakenly matching and updating the "urlpattern" PR
+          # as seen in https://github.com/nodejs/node/pull/57368
+          branch: actions/update-${{ matrix.subsystem }}-wpt
           author: Node.js GitHub Bot <[email protected]>
           title: 'test: update WPT for ${{ matrix.subsystem }} to ${{ env.short_version }}'
           commit-message: 'test: update WPT for ${{ matrix.subsystem }} to ${{ env.short_version }}'