remove unnecessary git push from build step

.gitlab-ci.yml

@@ -48,6 +48,7 @@ build:
       - node_modules/
   script:
     - npm ci
+    
     - |
       $repos = @("frontend", "player", "stream-api", "auth-proxy")
       $last = @{}
@@ -99,22 +100,6 @@ build:
       
       echo "CHANGED=true" >> build.env
 
-    - |
-      try {
-        git config user.name "gitlab-ci[bot]"
-        git config user.email "gitlab-ci[bot]@gitlab.com"
-        git add last-shas.json
-        
-        $gitStatus = git status --porcelain
-        if ($gitStatus) {
-          git remote set-url origin "https://oauth2:$env:GITLAB_TOKEN@gitlab.com/$env:CI_PROJECT_PATH.git"
-          git commit -m "chore: update last-known repo SHAs [skip ci]"
-          git push origin "HEAD:$env:CI_COMMIT_BRANCH"
-        }
-      } catch {
-        Write-Warning "Could not push last-shas.json back to git repository. Proceeding with build..."
-      }
-
     - Write-Host "Starting secure build process..."
     - node build-pipeline.js