Remove duplicate "checkout" step in build action

Author: goldenapples

.github/workflows/build-release-branch.yml

@@ -14,14 +14,10 @@ jobs:
     name: "Update release branch"
     runs-on: ubuntu-latest
     steps:
-      - name: Check out project
-        uses: actions/checkout@8e8c483db84b4bee98b60c0593521ed34d9990e8 # v6.0.1
-
       - name: Set up Node
         uses: actions/setup-node@v4
         with:
           node-version: 24
-          cache: 'npm'
 
       - name: Merge and build
         uses: humanmade/hm-github-actions/.github/actions/build-to-release-branch@04c32a93e52ae987095f144105745a501d6207c8 # v0.2.0