stage proper file

stack-updater/get_principal_branch.sh

-if git branch -a | grep -q main
-then
-	echo "main";
-else
-	echo "master";
-fi

stack-updater/stack_updater.yml

@@ -15,10 +15,10 @@ update:
       - git checkout $current_version
       - git pull
       - node package-version-updater/versionUpdater.js -v $current_version
-      - git add package.json
+      - bash package-version-updater/stage_file.sh
       - git commit -m "Dependencies updated to $current_version"
       - npm version --allow-same-version $current_version
-      - branch=`bash get_principal_branch.sh`
+      - branch=`bash package-version-updater/get_principal_branch.sh`
       - echo ${branch}
       - git checkout ${branch}
       - git pull