ci: Fix branch

.github/workflows/update_pixi_lockfiles.yml

@@ -1,4 +1,4 @@
-name: CI - Update Pixi lockfiles
+name: CI - Update Pixi lockfile
 permissions:
   contents: write
   pull-requests: write
@@ -20,13 +20,18 @@ jobs:
           private-key: ${{ secrets.APP_PRIVATE_KEY }}
 
       - uses: actions/checkout@v4
+        with:
+          token: ${{ steps.generate-token.outputs.token }}
+          ref: topic/pixi
+          # Make sure the value of GITHUB_TOKEN will not be persisted in repo's config
+          persist-credentials: false
 
       - name: Set up pixi
         uses: prefix-dev/[email protected]
         with:
           run-install: false
 
-      - name: Update lockfiles
+      - name: Update lockfile
         run: |
           set -o pipefail
           pixi update --json | pixi exec pixi-diff-to-markdown >> diff.md
@@ -35,11 +40,11 @@ jobs:
         uses: peter-evans/create-pull-request@v7
         with:
           token: ${{ steps.generate-token.outputs.token }}
-          commit-message: Update pixi lockfile
+          commit-message: 'pixi: Update pixi lockfile'
           title: Update pixi lockfile
           body-path: diff.md
-          branch: update-pixi
-          base: main
+          branch: topic/update-pixi
+          base: topic/pixi
           labels: pixi
           delete-branch: true
           add-paths: pixi.lock