A small tweak in the PR title

autoupdate-dependencies.sh

@@ -88,7 +88,7 @@ then
     git add -A
 
     # commit the changes to updated files
-    git commit -a -m "Auto-updated dependencies on $job_date" --signoff
+    git commit -a -m ":arrow_up: Auto-updated dependencies on $job_date" --signoff
 
     # push the changes
     git push authenticated -f
@@ -97,8 +97,8 @@ then
 
     # create the PR
     # if PR already exists, then update
-    title="Dependencies updated on $job_date"
-    pr_message="### :arrow_up: $title \nThis pull request is generated by GitHub action based on the provided update commands."
+    title=":arrow_up: Dependencies updated on $job_date"
+    pr_message="### $title \nThis pull request is generated by GitHub action based on the provided update commands."
     response=$(curl --write-out "%{message}\n" -X POST -H "Content-Type: application/json" -H "Authorization: token $token" \
          --data '{"title":"'"$title"'","head": "'"$branch_name"'","base":"'"$pr_branch"'", "body":"'"$pr_message"'"}' \
          "https://api.github.com/repos/$repo/pulls")